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Week 1
Session 1
Session 2
Session 3
Session 4
Session 5
Week 21
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Session 2
Session 3
Session 4
Session 5
Week 2
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Session 2
Session 3
Session 4
Session 5
Week 22
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Session 3
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Week 3
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Week 23
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Week 4
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Week 24
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Week 5
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Week 25
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Week 6
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Week 26
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Session 5
Week 7
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Week 27
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Session 3
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Week 8
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Session 3
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Week 28
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Session 2
Session 3
Session 4
Session 5
Week 9
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Session 2
Session 3
Session 4
Session 5
Week 29
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Session 2
Session 3
Session 4
Session 5
Week 10
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Session 2
Session 3
Session 4
Session 5
Week 30
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Session 3
Session 4
Session 5
Week 11
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Session 2
Session 3
Session 4
Session 5
Week 31
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Session 2
Session 3
Session 4
Session 5
Week 12
Session 1
Session 2
Session 3
Session 4
Session 5
Week 32
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Session 3
Session 4
Session 5
Week 13
Session 1
Session 2
Session 3
Session 4
Session 5
Week 33
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Session 2
Session 3
Session 4
Session 5
Week 14
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Session 2
Session 3
Session 4
Session 5
Week 34
Session 1
Session 2
Session 3
Session 4
Session 5
Week 15
Session 1
Session 2
Session 3
Session 4
Session 5
Week 35
Session 1
Session 2
Session 3
Session 4
Session 5
Week 16
Session 1
Session 2
Session 3
Session 4
Session 5
Week 36
Session 1
Session 2
Session 3
Session 4
Session 5
Week 17
Session 1
Session 2
Session 3
Session 4
Session 5
Week 37
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Session 2
Session 3
Session 4
Session 5
Week 18
Session 1
Session 2
Session 3
Session 4
Session 5
Week 38
Session 1
Session 2
Session 3
Session 4
Session 5
Week 19
Session 1
Session 2
Session 3
Session 4
Session 5
Week 39
Session 1
Session 2
Session 3
Session 4
Session 5
Week 20
Session 1
Session 2
Session 3
Session 4
Session 5
Week 40
Session 1
Session 2
Session 3
Session 4
Session 5
Week 1 Session 1
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Week 1 Session 1
Mental Strategies Answers
Q
Question
Answer
1
2+3
2
89 + 11
3
What is half of 6?
4
125 − 10
115
5
177 + ☐ = 270
93
6
53 = 23 + ☐
30
7
805 − 804
1
8
4 × 1 = 4, so 4 ÷ 4 = ☐
1
9
Write 20:12 in 12 hour clock format
10
9:37 pm is how many minutes after 9:08 pm?
5
100
3
8:12 pm
29
Week 1 Session 1
Timestables Answers
Q
Question
Answer
1
2×9=☐
18
2
24 ÷ 3 = ☐
8
3
10 × ☐ = 80
8
4
6÷☐=3
2
5
1×2=☐
2
6
28 ÷ 7 = ☐
4
7
☐ × 6 = 54
9
8
☐÷2=5
10
9
3×9=☐
27
10
4÷4=☐
1
Week 1 Session 1
Key Skills Answers
Q
Question
1
61 × 31
1891
2
657 − 382
275
3
7.2 × 94.2
678.24
4
0.7 as a fraction
7/10
5
46.15 + 5.08
51.23
6
(−40) ÷ (−4)
If a = 4 b = 3 and c = 1, what is the value of
3a − b2 ?
10
3 − (−5)
What is the highest common factor of 12 and
4?
What is the value of 13 squared?
8
7
8
9
10
Answer
3
4
169
Week 1
Session 1
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Week 1 Session 2
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Week 1 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐+4=5
1
2
38 + 62
3
What is half of 2?
4
128 − 10
118
5
120 + ☐ = 210
90
6
124 = 90 + ☐
34
7
610 − 606
4
8
1 × 7 = 7, so 7 ÷ 1 = ☐
7
9
Write 11:07 am in 24 hour clock format
From 3:01 am, how many minutes until 3:19
am?
10
100
1
11:07
18
Week 1 Session 2
Timestables Answers
Q
Question
Answer
1
2×9=☐
18
2
30 ÷ 5 = ☐
6
3
10 × ☐ = 100
10
4
54 ÷ ☐ = 6
9
5
10 × 7 = ☐
70
6
40 ÷ 10 = ☐
4
7
☐ × 5 = 15
3
8
☐÷8=8
64
9
5×1=☐
5
10
24 ÷ 3 = ☐
8
Week 1 Session 2
Key Skills Answers
Q
Question
1
81 × 98
7938
2
1596 − 837
759
3
9.1 × 13.13
119.483
4
20% as a fraction
5
4.98 + 15.59
6
(−18) ÷ 3
If a = 7 b = 5 and c = 3, what is the value of
3b2 ?
−6
8
(−1) − (−4)
3
9
Is 2 a factor of 12?
10
What is the positive value of √64?
7
Answer
20/100 or 1/5
20.57
75
Yes
8
Week 1
Session 2
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Week 1 Session 3
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Week 1 Session 3
Mental Strategies Answers
Q
Question
1
3+2
2
63 + 37
100
3
Halve 7
3.5
4
151 − 10
141
5
42 + ☐ = 60
18
6
108 = 28 + ☐
80
7
332 − 330
2
8
3 × 8 = 24, so 24 ÷ 8 = ☐
3
9
Write 14:15 in 12 hour clock format
From 9:16 am, how many minutes until 10:04
am?
10
Answer
5
2:15 pm
48
Week 1 Session 3
Timestables Answers
Q
Question
Answer
1
3×4=☐
12
2
24 ÷ 6 = ☐
4
3
7 × ☐ = 70
10
4
9÷☐=1
9
5
9×5=☐
45
6
4÷2=☐
2
7
☐ × 7 = 14
2
8
☐÷6=8
48
9
10 × 2 = ☐
20
10
5÷1=☐
5
Week 1 Session 3
Key Skills Answers
Q
Question
1
6 × 725
4350
2
7614 − 5253
2361
3
6.1 × 3
18.3
4
0.86 = ☐%
5
57 + 2.34
6
56 ÷ (−8)
If a = 9 b = 10 and c = 5, what is the value of
2ab − c ?
7
8
9
10
(−2) − (−1)
What is the highest common factor of 23 and
20?
What is the value of (−6) squared?
Answer
86
59.34
−7
175
−1
1
36
Week 1
Session 3
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Week 1 Session 4
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Week 1 Session 4
Mental Strategies Answers
Q
Question
1
2+3
5
2
☐ + 65 = 100
35
3
What is half of 7?
3.5
4
140 − 10
130
5
145 + ☐ = 190
45
6
81 = 40 + ☐
41
7
306 − 303
3
8
10 × 8 = 80, so 80 ÷ 10 = ☐
8
9
Write 10:21 in 12 hour clock format
1:56 am is how many minutes after 12:59
am?
10
Answer
10:21 am
57
Week 1 Session 4
Timestables Answers
Q
Question
Answer
1
5 × 10 = ☐
50
2
24 ÷ 3 = ☐
8
3
2 × ☐ = 18
9
4
9÷☐=3
3
5
8×2=☐
16
6
48 ÷ 8 = ☐
6
7
☐ × 7 = 49
7
8
☐÷6=5
30
9
7×8=☐
56
10
35 ÷ 7 = ☐
5
Week 1 Session 4
Key Skills Answers
Q
Question
1
8 × 625
5000
2
731 − 367
364
3
7×9
63
4
1.02 = ☐%
102
5
1.15 + 20.33
6
(−48) ÷ (−8)
If a = 3 b = 8 and c = 5, what is the value of
(2b − a)2 ?
7
Answer
21.48
6
169
8
4 − (−4)
9
Is 14 a factor of 33?
No
10
What is the value of 142?
196
8
Week 1
Session 4
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Week 1 Session 5
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Week 1 Session 5
Mental Strategies Answers
Q
Question
Answer
1
1+4
2
19 + 81
100
3
Halve 2
1
4
42 − 10
32
5
124 + ☐ = 200
76
6
84 = 34 + ☐
50
7
925 − 920
5
8
7 × 8 = 56, so 56 ÷ 7 = ☐
8
9
Write 1:58 pm in 24 hour clock format
10
6:59 am is how many minutes after 6:19 am?
5
13:58
40
Week 1 Session 5
Timestables Answers
Q
Question
Answer
1
2×6=☐
12
2
8÷2=☐
4
3
1 × ☐ = 10
10
4
10 ÷ ☐ = 1
10
5
9×7=☐
63
6
5÷5=☐
1
7
☐ × 8 = 72
9
8
☐÷8=3
24
9
2×4=☐
8
10
18 ÷ 6 = ☐
3
Week 1 Session 5
Key Skills Answers
Q
Question
1
3 × 991
2973
2
16182 − 8764
7418
3
2.3 × 7.17
4
0.45 as a fraction
5
22.17 + 8.31
6
(−48) ÷ 6
If a = 6 b = 3 and c = 10, what is the value of
bc / a ?
−8
(−10) − (−5)
What is the highest common factor of 15 and
27?
What is the value of 7 squared?
−5
7
8
9
10
Answer
16.491
45/100 or 19/20
30.48
5
3
49
Week 1
Session 5
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Week 2 Session 1
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Week 2 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 6 = 10
4
2
What is double 5?
10
3
Halve 63
31.5
4
26 + 30
56
5
98 + 99
197
6
22 + 10 = 22 + 8 + ☐
7
3 + 223
8
20 + 61 = 20 + 60 + ☐
1
9
☐+3=5
2
10
☐ + 2 = 20
18
2
226
Week 2 Session 1
Timestables Answers
Q
Question
Answer
1
9×5=☐
45
2
10 ÷ 2 = ☐
5
3
8×☐=8
1
4
16 ÷ ☐ = 4
4
5
8×4=☐
32
6
15 ÷ 3 = ☐
5
7
☐ × 2 = 12
6
8
☐÷7=1
7
9
5×8=☐
40
10
14 ÷ 2 = ☐
7
Week 2 Session 1
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
10
Q
Question
Answer
1
3905 ÷ 5
781
2
7 + 25 ÷ 5
12
3
2.013 ÷ 0.1
20.13
4
2.26 × 1000
2260
5
34 − 0.74
33.26
6
Write 56/72 in its simplest form
7
Difference between 4 and −4
8
8
See number line
What is the lowest common multiple of 4 and
5?
What is the cube root of 27?
6
9
10
7/9
20
3
Week 2
Session 1
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Ninja Score to see
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Week 2 Session 2
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Week 2 Session 2
Mental Strategies Answers
Q
Question
Answer
1
6 + ☐ = 10
4
2
What is double 7?
14
3
Halve 31
15.5
4
103 + 60
163
5
76 + 77
153
6
43 + 9 = 43 + 7 + ☐
7
5 + 142
8
95 + 13 = 90 + 10 + ☐
8
9
3+2
5
10
3 + ☐ = 20
17
2
147
Week 2 Session 2
Timestables Answers
Q
Question
Answer
1
9×3=☐
27
2
63 ÷ 9 = ☐
7
3
10 × ☐ = 20
2
4
30 ÷ ☐ = 10
3
5
10 × 8 = ☐
80
6
64 ÷ 8 = ☐
8
7
☐ × 2 = 16
8
8
☐÷7=6
42
9
4×3=☐
12
10
72 ÷ 9 = ☐
8
Week 2 Session 2
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
30
Q
Question
1
608 ÷ 4
2
1+4×2
9
3
42.4 ÷ 8
5.3
4
0.86 × 1000
860
5
27.39 − 2.59
24.8
6
Write 72/80 in its simplest form
9/10
7
Which is the lowest number, 2 or −10?
−10
8
See number line
What is the lowest common multiple of 3 and
4?
What is the value of (−5) cubed?
9
10
Answer
152
6
12
−125
Week 2
Session 2
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Ninja Score to see
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you’ve earned
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Week 2 Session 3
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Week 2 Session 3
Mental Strategies Answers
Q
Question
Answer
1
8 + ☐ = 10
2
2
What is double 7?
14
3
What is half of 93?
46.5
4
12 + 10
22
5
14 + 13
27
6
49 + 10 = 49 + 1 + ☐
9
7
4 + 926
8
57 + 50 = 50 + 50 + ☐
7
9
2+☐=5
3
10
17 + 3
20
930
Week 2 Session 3
Timestables Answers
Q
Question
Answer
1
10 × 1 = ☐
10
2
14 ÷ 7 = ☐
2
3
6 × ☐ = 24
4
4
12 ÷ ☐ = 6
2
5
7×2=☐
14
6
4÷2=☐
2
7
☐ × 7 = 21
3
8
☐÷4=4
16
9
3×8=☐
24
10
63 ÷ 7 = ☐
9
Week 2 Session 3
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
1
Q
Question
Answer
1
738 ÷ 9
82
2
1+4÷2
3
3
0.887 ÷ 0.1
8.87
4
1000 × 0.21
210
5
57.07 − 8.79
48.28
6
Write 9/54 in its simplest form
1/6
7
Difference between −7 and −3
4
8
See number line
9
List the first 4 multiples of 13
10
What is the value of ∛64?
0.7
13, 26, 39, 52
4
Week 2
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 2 Session 4
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Week 2 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5 + ☐ = 10
5
2
Double 2
4
3
Halve 12
6
4
55 + 20
75
5
90 + 89
179
6
30 + 11 = 30 + 10 + ☐
7
1 + 419
8
12 + 41 = 10 + 40 + ☐
3
9
1+4
5
10
2 + 18
20
1
420
Week 2 Session 4
Timestables Answers
Q
Question
Answer
1
2×8=☐
16
2
8÷2=☐
4
3
5×☐=5
1
4
2÷☐=1
2
5
10 × 6 = ☐
60
6
6÷3=☐
2
7
☐ × 4 = 16
4
8
☐÷1=4
4
9
10 × 7 = ☐
70
10
72 ÷ 9 = ☐
8
Week 2 Session 4
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
4
6
Q
Question
Answer
1
3267 ÷ 9
363
2
3+5×2
13
3
5.24 ÷ 0.2
26.2
4
0.66 × 1000
660
5
50.26 − 4.05
46.21
6
Write 5/15 in its simplest form
1/3
7
Difference between 9 and −10
19
8
See number line
4.25
9
Is 18 a multiple of 6?
Yes
10
What is the value of (−3) cubed?
−27
Week 2
Session 4
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Ninja Score to see
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you’ve earned
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Week 2 Session 5
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Week 2 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 5 = 10
5
2
Double 3
6
3
Halve 35
17.5
4
173 + 50
223
5
47 + 44
91
6
32 + 10 = 32 + 8 + ☐
2
7
1 + 566
8
40 + 68 = 40 + 60 + ☐
8
9
3+2
5
10
4 + ☐ = 20
16
567
Week 2 Session 5
Timestables Answers
Q
Question
Answer
1
6×3=☐
18
2
14 ÷ 2 = ☐
7
3
6 × ☐ = 36
6
4
18 ÷ ☐ = 6
3
5
9×3=☐
27
6
32 ÷ 8 = ☐
4
7
☐ × 4 = 24
6
8
☐ ÷ 10 = 4
40
9
4×2=☐
8
10
30 ÷ 3 = ☐
10
Week 2 Session 5
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
25
75
Q
Question
Answer
1
2688 ÷ 3
896
2
8+8÷2
12
3
245.52 ÷ 4
61.38
4
6.14 × 10
61.4
5
16.15 − 5.11
11.04
6
Write 63/70 in its simplest form
9/10
7
Which is the lowest number, 3 or −9?
−9
8
See number line
45
9
List the first 4 multiples of 14
10
What is the value of (−4) cubed?
14, 28, 42, 56
−64
Week 2
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 3 Session 1
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Week 3 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 13 = 20
2
Double 96
192
3
79 + 10
89
4
120 − 80
40
5
8=7+☐
1
6
13 − 10 = 13 − 3 − ☐
7
7
85 + 85 = 85 × ☐
2
8
What is the time on the clock?
9
8+2
10
10
81 + ☐ = 100
19
7
4:00 am
Week 3 Session 1
Timestables Answers
Q
Question
Answer
1
6×6=☐
36
2
3÷3=☐
1
3
4 × ☐ = 32
8
4
4÷☐=4
1
5
5×4=☐
20
6
45 ÷ 9 = ☐
5
7
☐ × 7 = 28
4
8
☐÷6=9
54
9
4×5=☐
20
10
48 ÷ 8 = ☐
6
Week 3 Session 1
Key Skills Answers
Q
Question
1
2757 + 5432
2
4
42 + 2 × 4
Write Four Thousand, Three Hundred and
Twenty in digits
5.94 ÷ 10
5
1 × (−8)
−8
6
Round 0.7475 to 1 d.p.
0.7
7
1 + (−9)
−8
8
Round 0.4559 to 2 s.f.
9
Letter at (−2, −2)
V
10
10/1 = ☐/4
40
3
Answer
8189
24
4320
0.594
0.46
Week 3
Session 1
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you’ve earned
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Week 3 Session 2
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Week 3 Session 2
Mental Strategies Answers
Q
Question
Answer
1
20 + ☐ = 20
2
Double 53
106
3
51 + 10
61
4
100 − 10
90
5
8=4+☐
4
6
70 − 11 = 70 − 10 − ☐
1
7
7+7+7+7= ☐×7
4
8
What is the time on the clock?
9
1 + ☐ = 10
10
66 + 34
0
3:20 pm
9
100
Week 3 Session 2
Timestables Answers
Q
Question
Answer
1
2×3=☐
6
2
7÷1=☐
7
3
8 × ☐ = 80
10
4
16 ÷ ☐ = 4
4
5
9×5=☐
45
6
35 ÷ 7 = ☐
5
7
☐ × 9 = 81
9
8
☐ ÷ 10 = 2
20
9
8×2=☐
16
10
63 ÷ 9 = ☐
7
Week 3 Session 2
Key Skills Answers
Q
Question
Answer
1
271 + 8501
2
(8 − 2)2 + 3 × 4
3
Write 4335000 in words. (Use the opposite page
for your answer)
4
0.8 ÷ 100
0.008
5
(−1) × (−9)
9
6
Round 61.9361 to 3 d.p.
7
(−7) + (−4)
−11
8
Round 3096 to 1 s.f.
3000
9
Letter at (−1, 1)
G
10
7/5 = 35/☐
25
8772
48
Four Million, Three
Hundred and Thirty
Five Thousand
61.936
Week 3
Session 2
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you’ve earned
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Week 3 Session 3
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Week 3 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐ + 5 = 20
15
2
What is double 39?
78
3
65 + 10
75
4
179 − 10
169
5
6=2+☐
4
6
12 − 6 = 12 − 2 − ☐
4
7
86 = ☐ × 86
1
9
Draw hands on the clock face showing 4:45
pm
☐ + 8 = 10
10
57 + 43
8
See clock above
2
100
Week 3 Session 3
Timestables Answers
Q
Question
Answer
1
2×6=☐
12
2
24 ÷ 8 = ☐
3
3
9 × ☐ = 81
9
4
18 ÷ ☐ = 6
3
5
4×6=☐
24
6
6÷1=☐
6
7
☐ × 4 = 28
7
8
☐÷6=2
12
9
8×2=☐
16
10
5÷1=☐
5
Week 3 Session 3
Key Skills Answers
Q
Question
Answer
1
32 + 211
243
2
32 + 2 × 2
13
3
Write 6481504 in words. (Use the opposite page for
your answer)
Six Million, Four Hundred
and Eighty One
Thousand, Five Hundred
and Four
4
9.47 ÷ 10
0.947
5
(−8) × (−8)
64
6
Round 48.2994 to 3 d.p.
7
(−6) + (−10)
−16
8
Round 34 to 3 s.f.
34.0
9
Letter at (−1, 1)
G
10
4/2 = 8/☐
4
48.299
Week 3
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 3 Session 4
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Week 3 Session 4
Mental Strategies Answers
Q
Question
Answer
1
13 + 7
20
2
Double 25
50
3
103 + 10
113
4
165 − 80
85
5
9=1+☐
8
6
44 − 8 = 44 − 4 − ☐
4
7
84 + 84 = 84 × ☐
2
8
What is the time on the clock?
9
2+8
10
10
☐ + 83 = 100
17
10:55 pm
Week 3 Session 4
Timestables Answers
Q
Question
Answer
1
2 × 10 = ☐
20
2
4÷2=☐
2
3
10 × ☐ = 50
5
4
63 ÷ ☐ = 9
7
5
5×7=☐
35
6
6÷3=☐
2
7
☐×1=8
8
8
☐÷8=9
72
9
7×7=☐
49
10
80 ÷ 8 = ☐
10
Week 3 Session 4
Key Skills Answers
Q
Question
1
4677 + 507
2
(102 − 2) ÷ 10
3
Write 963206 in words. (Use the opposite
page for your answer)
Answer
5184
10
Nine Hundred and
Sixty Three Thousand,
Two Hundred and Six
4
0.27 ÷ 10
5
2 × (−2)
6
Round 96.2442 to 2 d.p.
7
10 + (−10)
8
Round 0.1535 to 1 s.f.
9
Letter at (1, 1)
I
10
10/10 = ☐/40
40
0.027
−4
96.24
0
0.2
Week 3
Session 4
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Week 3 Session 5
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Week 3 Session 5
Mental Strategies Answers
Q
Question
1
3 + 17
20
2
What is double 55?
110
3
112 + 10
122
4
29 − 10
19
5
6=1+☐
5
6
58 − 11 = 58 − 8 − ☐
3
7
73 + 73 = ☐ × 73
2
9
Draw hands on the clock face showing 10:10
am
7+3
10
☐ + 46 = 100
8
Answer
See clock above
10
54
Week 3 Session 5
Timestables Answers
Q
Question
Answer
1
6×7=☐
42
2
24 ÷ 4 = ☐
6
3
4 × ☐ = 28
7
4
24 ÷ ☐ = 4
6
5
7×6=☐
42
6
18 ÷ 6 = ☐
3
7
☐×4=4
1
8
☐÷2=3
6
9
5×7=☐
35
10
54 ÷ 6 = ☐
9
Week 3 Session 5
Key Skills Answers
Q
Question
Answer
1
481 + 1429
2
(9 − 5)2 + 3 × 4
3
Write One Thousand and Thirty Two in digits
4
0.35 ÷ 100
0.0035
5
(−6) × (−10)
60
6
Round 81.4358 to 2 d.p.
7
(−5) + (−5)
−10
8
Round 21 to 2 s.f.
21
9
Letter at (0, −1)
S
10
1/4 = 3/☐
12
1910
28
1032
81.44
Week 3
Session 5
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you’ve earned
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Week 4 Session 1
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Week 4 Session 1
Mental Strategies Answers
Q
Question
Answer
1
3+2
5
2
☐ + 25 = 100
75
3
What is half of 8?
4
4
150 − 10
140
5
191 + ☐ = 210
19
6
97 = 60 + ☐
37
7
135 − 132
3
8
5 × 8 = 40, so 40 ÷ 5 = ☐
8
9
Write 20:11 in 12 hour clock format
10
07:52 is how many minutes after 07:06?
8:11 pm
46
Week 4 Session 1
Timestables Answers
Q
Question
Answer
1
2×7=☐
14
2
6÷3=☐
2
3
3 × ☐ = 21
7
4
56 ÷ ☐ = 8
7
5
10 × 9 = ☐
90
6
30 ÷ 10 = ☐
3
7
☐ × 4 = 16
4
8
☐÷9=6
54
9
10 × 8 = ☐
80
10
90 ÷ 10 = ☐
9
Week 4 Session 1
Key Skills Answers
Q
Question
1
What is 3/9 of 54?
2
964 × 9
8676
3
1444 − 982
462
4
3.2 × 8.25
26.4
5
8/10 as a decimal number
0.8
6
82.23 + 7.27
89.5
7
36 ÷ (−6)
9
If a = 1 b = 3 and c = 4, what is the value of
4b3 ?
10 − (−9)
10
Is 5 a factor of 21?
8
Answer
18
−6
108
19
No
Week 4
Session 1
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Week 4 Session 2
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Week 4 Session 2
Mental Strategies Answers
Q
Question
Answer
1
2+☐=5
3
2
54 + 46
100
3
Halve 6
3
4
184 − 10
174
5
91 + ☐ = 150
59
6
83 = 60 + ☐
23
7
931 − 926
5
8
9 × 5 = 45, so 45 ÷ 5 = ☐
9
9
Write 8:13 am in 24 hour clock format
From 2:46 am, how many minutes until 3:22
am?
10
08:13
36
Week 4 Session 2
Timestables Answers
Q
Question
Answer
1
10 × 10 = ☐
2
8÷8=☐
1
3
5 × ☐ = 40
8
4
20 ÷ ☐ = 5
4
5
9×8=☐
72
6
80 ÷ 8 = ☐
10
7
☐ × 6 = 18
3
8
☐ ÷ 7 = 10
70
9
2×8=☐
16
10
12 ÷ 6 = ☐
2
100
Week 4 Session 2
Key Skills Answers
Q
Question
1
What is 1/3 of 12?
2
6 × 225
1350
3
6543 − 5498
1045
4
9.8 × 4.8
47.04
5
100% as a decimal number
6
1.23 + 46.27
47.5
7
(−24) ÷ (−3)
8
8
9
10
If a = 7 b = 7 and c = 2, what is the value of
ac / 2b ?
(−3) − (−7)
What is the highest common factor of 23 and
20?
Answer
4
1
1
4
1
Week 4
Session 2
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Week 4 Session 3
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Week 4 Session 3
Mental Strategies Answers
Q
Question
Answer
1
2+☐=5
3
2
4 + 96
100
3
What is half of 3?
1.5
4
80 − 10
70
5
40 + ☐ = 130
90
6
81 = 70 + ☐
11
7
722 − 719
3
8
6 × 2 = 12, so 12 ÷ 6 = ☐
2
9
Write 5:56 pm in 24 hour clock format
From 8:13 am, how many minutes until 9:13
am?
10
17:56
60
Week 4 Session 3
Timestables Answers
Q
Question
Answer
1
5×3=☐
15
2
49 ÷ 7 = ☐
7
3
8 × ☐ = 64
8
4
5÷☐=5
1
5
10 × 8 = ☐
80
6
12 ÷ 6 = ☐
2
7
☐ × 9 = 54
6
8
☐÷7=7
49
9
7×6=☐
42
10
7÷7=☐
1
Week 4 Session 3
Key Skills Answers
Q
Question
1
What is 5/7 of 63?
2
7 × 498
3486
3
15939 − 9001
6938
4
6.63 × 7
46.41
5
89.9% as a decimal number
0.899
6
85.83 + 9.4
95.23
7
(−30) ÷ (−10)
8
9
10
If a = 8 b = 7 and c = 7, what is the value of
∛a + bc ?
(−10) − (−6)
What is the highest common factor of 8 and
2?
Answer
45
3
51
−4
2
Week 4
Session 3
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Week 4 Session 4
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Week 4 Session 4
Mental Strategies Answers
Q
Question
Answer
1
3+2
5
2
☐ + 80 = 100
20
3
What is half of 4?
2
4
84 − 10
74
5
122 + ☐ = 200
78
6
82 = 12 + ☐
70
7
588 − 585
3
8
8 × 9 = 72, so 72 ÷ 8 = ☐
9
9
Write 05:53 in 12 hour clock format
10
1:46 pm is how many minutes after 1:30 pm?
5:53 am
16
Week 4 Session 4
Timestables Answers
Q
Question
Answer
1
5 × 10 = ☐
50
2
42 ÷ 6 = ☐
7
3
8 × ☐ = 24
3
4
10 ÷ ☐ = 1
10
5
8×9=☐
72
6
8÷8=☐
1
7
☐ × 4 = 16
4
8
☐÷7=7
49
9
1×9=☐
9
10
70 ÷ 10 = ☐
7
Week 4 Session 4
Key Skills Answers
Q
Question
1
What is 4/10 of 20?
2
489 × 5
2445
3
14704 − 8633
6071
4
6.1 × 80.09
5
70% as a fraction
6
0.41 + 61.21
61.62
7
(−40) ÷ (−5)
8
9
If a = 6 b = 6 and c = 10, what is the value of
2abc − c2
(−6) − (−6)
10
Is 7 a factor of 24?
8
Answer
8
488.549
70/100 or 7/10
620
0
No
Week 4
Session 4
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Week 4 Session 5
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Week 4 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐+3=5
2
2
68 + ☐ = 100
32
3
What is half of 4?
2
4
189 − 10
179
5
161 + ☐ = 240
79
6
74 = 24 + ☐
50
7
629 − 627
2
8
9 × 5 = 45, so 45 ÷ 9 = ☐
5
9
Write 8:23 am in 24 hour clock format
10
2:15 pm is how many minutes after 2:05 pm?
08:23
10
Week 4 Session 5
Timestables Answers
Q
Question
Answer
1
5×1=☐
5
2
24 ÷ 8 = ☐
3
3
5 × ☐ = 30
6
4
45 ÷ ☐ = 9
5
5
6×1=☐
6
6
40 ÷ 4 = ☐
10
7
☐ × 1 = 10
10
8
☐÷3=9
27
9
6×4=☐
24
10
2÷2=☐
1
Week 4 Session 5
Key Skills Answers
Q
Question
1
What is 4/6 of 30?
2
3 × 911
2733
3
16071 − 8966
7105
4
6.9 × 5.85
5
8/10 as a decimal number
6
23.8 + 0.55
7
(−18) ÷ 9
9
If a = 6 b = 8 and c = 4, what is the value of
(2b/c)2
(−1) − (−3)
10
Is 1 a factor of 3?
8
Answer
20
40.365
0.8
24.35
−2
16
2
Yes
Week 4
Session 5
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Week 5 Session 1
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Week 5 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 9 = 10
1
2
What is double 6?
12
3
Halve 24
12
4
143 + 60
203
5
94 + 97
191
6
41 + 10 = 41 + 9 + ☐
7
1 + 700
8
31 + 47 = 30 + 40 + ☐
9
What is double 56?
10
What is half of 4?
1
701
8
112
2
Week 5 Session 1
Timestables Answers
Q
Question
Answer
1
7 × 10 = ☐
70
2
21 ÷ 3 = ☐
7
3
3 × ☐ = 18
6
4
5÷☐=1
5
5
1×2=☐
2
6
30 ÷ 3 = ☐
10
7
☐×2=8
4
8
☐÷3=6
18
9
3×6=☐
18
10
63 ÷ 7 = ☐
9
Week 5 Session 1
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
12
15
Q
Question
Answer
1
What is 25% of £190?
£47.50
2
6146 ÷ 7
878
3
4+5×1
9
4
462.2 ÷ 5
92.44
5
1000 × 0.64
640
6
69.12 − 9.2
59.92
7
Write 35/49 in its simplest form
8
10 − 10
0
9
See number line
What is the lowest common multiple of 6 and
8?
13
10
5/7
24
Week 5
Session 1
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Week 5 Session 2
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Week 5 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 5 = 10
5
2
What is double 7?
14
3
Halve 57
28.5
4
93 + 30
123
5
82 + 84
166
6
87 + 11 = 87 + 3 + ☐
7
1 + 487
8
14 + 40 = 14 + 40 + ☐
9
What is double 79?
158
10
What is half of 7?
3.5
8
488
0
Week 5 Session 2
Timestables Answers
Q
Question
Answer
1
2×2=☐
4
2
9÷3=☐
3
3
8 × ☐ = 16
2
4
35 ÷ ☐ = 5
7
5
2×1=☐
2
6
10 ÷ 2 = ☐
5
7
☐ × 6 = 48
8
8
☐÷8=6
48
9
9×3=☐
27
10
70 ÷ 7 = ☐
10
Week 5 Session 2
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
20
Q
Question
1
What is 45% of £140?
£63
2
3996 ÷ 4
999
3
5 + 10 × 3
35
4
7.474 ÷ 0.2
37.37
5
0.939 × 1000
939
6
96.54 − 8.01
88.53
7
Simplify 2/18
1/9
8
Difference between −10 and 9
19
9
See number line
What is the lowest common multiple of 7 and
8?
15
10
Answer
56
Week 5
Session 2
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Week 5 Session 3
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Week 5 Session 3
Mental Strategies Answers
Q
Question
Answer
1
9+1
10
2
What is double 3?
6
3
Halve 94
47
4
44 + 40
84
5
20 + 23
43
6
83 + 10 = 83 + 7 + ☐
3
7
5 + 695
700
8
46 + 56 = 40 + 50 + ☐
12
9
Double 25
50
10
What is half of 5?
2.5
Week 5 Session 3
Timestables Answers
Q
Question
Answer
1
10 × 10 = ☐
100
2
28 ÷ 7 = ☐
4
3
8 × ☐ = 16
2
4
40 ÷ ☐ = 4
10
5
7×1=☐
7
6
56 ÷ 8 = ☐
7
7
☐ × 8 = 32
4
8
☐÷4=9
36
9
9×2=☐
18
10
6÷1=☐
6
Week 5 Session 3
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
20
Q
Question
1
What is 10% of £200?
£20
2
1386 ÷ 3
462
3
8+2÷1
10
4
47.915 ÷ 0.5
95.83
5
100 × 88.255
8825.5
6
51 − 1.02
49.98
7
Write 9/18 in its simplest form
1/2
8
Which is the lowest number, −7 or −4?
−7
9
See number line
What is the lowest common multiple of 5 and
6?
7.5
10
Answer
30
Week 5
Session 3
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Week 5 Session 4
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Week 5 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 5 = 10
5
2
Double 9
18
3
What is half of 59?
29.5
4
71 + 60
131
5
98 + 99
197
6
73 + 8 = 73 + 7 + ☐
7
5 + 712
8
25 + 60 = 20 + 60 + ☐
5
9
What is double 40?
80
10
Halve 3
1.5
1
717
Week 5 Session 4
Timestables Answers
Q
Question
Answer
1
3×7=☐
21
2
80 ÷ 10 = ☐
8
3
3 × ☐ = 15
5
4
4÷☐=1
4
5
8×6=☐
48
6
40 ÷ 4 = ☐
10
7
☐×8=8
1
8
☐ ÷ 10 = 9
90
9
2×2=☐
4
10
2÷2=☐
1
Week 5 Session 4
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
12
15
Q
Question
Answer
1
What is 5% of £100?
£5
2
5292 ÷ 7
756
3
90 − 4 ÷ 4
89
4
15.22 ÷ 0.2
76.1
5
6.16 × 100
616
6
32.68 − 3.54
29.14
7
Write 24/80 in its simplest form
3/10
8
Difference between 6 and −3
9
See number line
10
List the first 4 multiples of 12
9
12.5
12, 24, 36, 48
Week 5
Session 4
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Week 5 Session 5
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Week 5 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 7 = 10
3
2
What is double 9?
18
3
Halve 40
20
4
111 + 30
141
5
66 + 63
129
6
17 + 9 = 17 + 3 + ☐
7
3 + 468
8
33 + 70 = 30 + 70 + ☐
9
Double 58
116
10
What is half of 7?
3.5
6
471
3
Week 5 Session 5
Timestables Answers
Q
Question
Answer
1
6×2=☐
12
2
36 ÷ 6 = ☐
6
3
5 × ☐ = 15
3
4
56 ÷ ☐ = 7
8
5
3×9=☐
27
6
5÷5=☐
1
7
☐×9=9
1
8
☐÷6=3
18
9
8×3=☐
24
10
18 ÷ 3 = ☐
6
Week 5 Session 5
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
2.1
Q
Question
Answer
1
What is 125% of £150?
£187.50
2
1710 ÷ 5
342
3
85 − 15 ÷ 5
82
4
28.82 ÷ 0.5
57.64
5
71.204 × 100
7120.4
6
25 − 1.33
23.67
7
Simplify 6/60
1/10
8
Which is the lowest number, −4 or −3?
−4
9
See number line
0.6
10
List the first 4 multiples of 11
11, 22, 33, 44
Week 5
Session 5
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Ninja Score to see
which Ninja Belt
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today!
Week 6 Session 1
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Week 6 Session 1
Mental Strategies Answers
Q
Question
1
17 + ☐ = 20
3
2
What is double 36?
72
3
89 + 10
99
4
143 − 20
123
5
5=4+☐
1
6
14 − 7 = 14 − 4 − ☐
3
7
56 + 56 = ☐ × 56
2
9
Draw hands on the clock face showing 7:05
pm
What is double 9?
10
Halve 48
8
Answer
See clock above
18
24
Week 6 Session 1
Timestables Answers
Q
Question
Answer
1
5 × 10 = ☐
50
2
18 ÷ 6 = ☐
3
3
9 × ☐ = 63
7
4
32 ÷ ☐ = 4
8
5
5×9=☐
45
6
3÷3=☐
1
7
☐ × 3 = 24
8
8
☐ ÷ 3 = 10
30
9
1×3=☐
3
10
10 ÷ 5 = ☐
2
Week 6 Session 1
Key Skills Answers
Q
Question
1
What is the value of (−15) squared?
225
2
986 + 3175
4161
3
√64 + 8 ÷ 8
9
4
Write 780026 in words. (Use the opposite page
for your answer)
5
13.089 ÷ 1000
6
(−1) × (−6)
7
Round 6.5254 to 2 d.p.
8
10 + (−5)
9
Round 0.006435 to 1 s.f.
10
Letter at (−2, −2)
Answer
Seven Hundred and
Eighty Thousand and
Twenty Six
0.013089
6
6.53
5
0.006
V
Week 6
Session 1
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Week 6 Session 2
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Week 6 Session 2
Mental Strategies Answers
Q
Question
Answer
1
8 + ☐ = 20
12
2
Double 49
98
3
69 + 10
79
4
196 − 80
116
5
6=3+☐
3
6
53 − 8 = 53 − 3 − ☐
5
7
9=9×☐
1
9
Draw hands on the clock face showing
quarter to nine
What is double 8?
10
Halve 14
8
See clock above
16
7
Week 6 Session 2
Timestables Answers
Q
Question
Answer
1
8×1=☐
8
2
28 ÷ 4 = ☐
7
3
2×☐=6
3
4
28 ÷ ☐ = 4
7
5
4×6=☐
24
6
6÷3=☐
2
7
☐×2=8
4
8
☐÷7=8
56
9
8×8=☐
64
10
80 ÷ 10 = ☐
8
Week 6 Session 2
Key Skills Answers
Q
Question
1
What is the value of 15 squared?
2
3530 + 6819
3
5
(8 − 2) × 2
Write Twenty Four Thousand, Three Hundred
in digits
43.537 ÷ 100
6
(−8) × 1
7
Round 22.7383 to 1 d.p.
8
2 + (−7)
−5
9
Round 275 to 1 s.f.
300
10
Letter at (2, 1)
4
Answer
225
10349
12
24300
0.43537
−8
22.7
J
Week 6
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Week 6 Session 3
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Week 6 Session 3
Mental Strategies Answers
Q
Question
Answer
1
11 + ☐ = 20
9
2
What is double 34?
68
3
193 + 10
203
4
140 − 50
90
5
4=1+☐
3
6
19 − 11 = 19 − 9 − ☐
2
7
14 + 14 + 14 = ☐ × 14
3
8
What is the time on the clock?
9
What is double 8?
16
10
What is half of 72?
36
4:35 am
Week 6 Session 3
Timestables Answers
Q
Question
Answer
1
7×4=☐
28
2
1÷1=☐
1
3
10 × ☐ = 100
10
4
90 ÷ ☐ = 10
9
5
8×8=☐
64
6
30 ÷ 5 = ☐
6
7
☐ × 10 = 10
1
8
☐÷8=7
56
9
4×9=☐
36
10
4÷4=☐
1
Week 6 Session 3
Key Skills Answers
Q
Question
Answer
1
What is the positive value of √16?
2
224 + 9070
9294
3
(7 + 1) × 3
24
4
Write Four Hundred and Sixty Two in digits
462
5
59.742 ÷ 10
5.9742
6
(−7) × (−4)
28
7
Round 0.9451 to 2 d.p.
8
2 + (−2)
9
Round 0.8243 to 3 s.f.
10
Letter at (−1, 1)
4
0.95
0
0.824
G
Week 6
Session 3
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Week 6 Session 4
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Week 6 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 17 = 20
2
Double 66
132
3
95 + 10
105
4
25 − 20
5
5
6=4+☐
2
6
66 − 10 = 66 − 6 − ☐
4
7
9=9×☐
1
8
What is the time on the clock?
9
Double 5
10
What is half of 59?
3
7:15 pm
10
29.5
Week 6 Session 4
Timestables Answers
Q
Question
Answer
1
4×3=☐
12
2
12 ÷ 4 = ☐
3
3
5 × ☐ = 25
5
4
10 ÷ ☐ = 2
5
5
4×7=☐
28
6
14 ÷ 2 = ☐
7
7
☐ × 8 = 80
10
8
☐÷1=3
3
9
5×6=☐
30
10
18 ÷ 2 = ☐
9
Week 6 Session 4
Key Skills Answers
Q
Question
1
What is the positive value of √25?
2
1668 + 2809
3
(10 − 10)2 + 3 × 2
4
Write Ten Thousand, Nine Hundred in digits
5
62.487 ÷ 1000
6
2 × (−7)
7
Round 45.4952 to 3 d.p.
8
(−4) + (−3)
9
Round 0.002734 to 3 s.f.
10
Letter at (2, −2)
Answer
5
4477
6
10900
0.062487
−14
45.495
−7
0.00273
Z
Week 6
Session 4
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Week 6 Session 5
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Week 6 Session 5
Mental Strategies Answers
Q
Question
Answer
1
1 + ☐ = 20
19
2
Double 54
108
3
22 + 10
32
4
44 − 40
4
5
7=2+☐
5
6
75 − 11 = 75 − 5 − ☐
6
7
6+6+6+6+6=6×☐
5
8
What is the time on the clock?
9
Double 7
14
10
What is half of 44?
22
4:50 pm
Week 6 Session 5
Timestables Answers
Q
Question
Answer
1
6×6=☐
36
2
2÷2=☐
1
3
6 × ☐ = 12
2
4
40 ÷ ☐ = 5
8
5
1×9=☐
9
6
40 ÷ 8 = ☐
5
7
☐ × 7 = 49
7
8
☐÷3=1
3
9
2×2=☐
4
10
48 ÷ 6 = ☐
8
Week 6 Session 5
Key Skills Answers
Q
Question
1
What is the value of 112?
121
2
7905 + 626
8531
3
(10 − 9) × 1
1
4
Write 744620 in words. (Use the opposite page
for your answer)
5
0.67 ÷ 100
6
3 × (−1)
7
Round 1.982 to 2 d.p.
8
(−3) + (−6)
9
Round 0.2352 to 3 s.f.
Answer
Seven Hundred and
Forty Four Thousand,
Six Hundred and
Twenty
0.0067
−3
1.98
−9
0.235
Week 6
Session 5
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Week 7 Session 1
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Week 7 Session 1
Mental Strategies Answers
Q
Question
Answer
1
4+1
5
2
66 + ☐ = 100
34
3
What is half of 6?
3
4
122 − 10
112
5
56 + ☐ = 90
34
6
56 = 26 + ☐
30
7
199 − 194
5
8
10 × 5 = 50, so 50 ÷ 10 = ☐
5
9
Write 2:15 pm in 24 hour clock format
10
From 15:09, how many minutes until 15:30?
14:15
21
Week 7 Session 1
Timestables Answers
Q
Question
Answer
1
9×5=☐
45
2
60 ÷ 6 = ☐
10
3
2 × ☐ = 16
8
4
10 ÷ ☐ = 1
10
5
9 × 10 = ☐
90
6
12 ÷ 2 = ☐
6
7
☐ × 5 = 20
4
8
☐÷4=6
24
9
8×3=☐
24
10
18 ÷ 6 = ☐
3
Week 7 Session 1
Key Skills Answers
Q
Question
1
List all the factors of 2
2
What is 1/2 of 8?
3
65 × 38
2470
4
11661 − 7509
4152
5
8.2 × 3.5
28.7
6
173.2% as a decimal number
1.732
7
13 + 4.5
17.5
8
40 ÷ (−10)
If a = 4 b = 5 and c = 7, what is the value of
3b − 2a ?
7 − (−5)
9
10
Answer
2, 1
4
−4
7
12
Week 7
Session 1
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Week 7 Session 2
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Week 7 Session 2
Mental Strategies Answers
Q
Question
Answer
1
3+2
5
2
75 + ☐ = 100
25
3
Halve 2
1
4
159 − 10
149
5
61 + ☐ = 130
69
6
96 = 60 + ☐
36
7
712 − 711
1
8
1 × 9 = 9, so 9 ÷ 1 = ☐
9
9
Write 17:39 in 12 hour clock format
10
From 01:49, how many minutes until 02:29?
5:39 pm
40
Week 7 Session 2
Timestables Answers
Q
Question
Answer
1
2×6=☐
12
2
28 ÷ 7 = ☐
4
3
4 × ☐ = 36
9
4
24 ÷ ☐ = 4
6
5
6×7=☐
42
6
8÷8=☐
1
7
☐ × 8 = 40
5
8
☐÷2=7
14
9
3×8=☐
24
10
8÷8=☐
1
Week 7 Session 2
Key Skills Answers
Q
2
Question
What is the highest common factor of 11 and
3?
What is 4/5 of 5?
3
5 × 666
3330
4
18897 − 9897
9000
5
4.61 × 5
23.05
6
17% as a decimal number
0.17
7
11 + 8.69
19.69
8
(−8) ÷ 2
If a = 2 b = 2 and c = 8, what is the value of
ac2 + 2 ?
6 − (−8)
1
9
10
Answer
1
4
−4
130
14
Week 7
Session 2
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Week 7 Session 3
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Week 7 Session 3
Mental Strategies Answers
Q
Question
Answer
1
1+☐=5
4
2
☐ + 58 = 100
42
3
Halve 7
3.5
4
158 − 10
148
5
91 + ☐ = 180
89
6
114 = 24 + ☐
90
7
104 − 100
4
8
2 × 8 = 16, so 16 ÷ 8 = ☐
2
9
Write 02:29 in 12 hour clock format
10
4:14 pm is how many minutes after 3:56 pm?
2:29 am
18
Week 7 Session 3
Timestables Answers
Q
Question
Answer
1
2×3=☐
6
2
18 ÷ 2 = ☐
9
3
3 × ☐ = 15
5
4
20 ÷ ☐ = 5
4
5
2×3=☐
6
6
70 ÷ 7 = ☐
10
7
☐×2=2
1
8
☐÷3=5
15
9
6×9=☐
54
10
6÷3=☐
2
Week 7 Session 3
Key Skills Answers
Q
2
Question
What is the highest common factor of 24 and
4?
What is 4/6 of 6?
3
549 × 4
2196
4
6062 − 3640
2422
5
8.7 × 85.92
747.504
6
0.83 = ☐%
83
7
11 + 1.14
8
(−30) ÷ (−5)
If a = 10 b = 6 and c = 4, what is the value of
3b − (a + c) ?
4 − (−2)
1
9
10
Answer
4
4
12.14
6
4
6
Week 7
Session 3
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Week 7 Session 4
Mental Strategies Answers
Q
Question
Answer
1
4+1
5
2
☐ + 78 = 100
22
3
Halve 6
3
4
165 − 10
155
5
116 + ☐ = 130
14
6
66 = 20 + ☐
46
7
186 − 182
4
8
7 × 5 = 35, so 35 ÷ 5 = ☐
7
9
Write 12:10 pm in 24 hour clock format
10
1:57 am is how many minutes after 1:13 am?
12:10
44
Week 7 Session 4
Timestables Answers
Q
Question
Answer
1
3×4=☐
12
2
36 ÷ 9 = ☐
4
3
8 × ☐ = 80
10
4
15 ÷ ☐ = 5
3
5
6×1=☐
6
6
16 ÷ 8 = ☐
2
7
☐ × 10 = 60
6
8
☐ ÷ 10 = 3
30
9
3×3=☐
9
10
24 ÷ 4 = ☐
6
Week 7 Session 4
Key Skills Answers
Q
Question
1
Is 10 a factor of 36?
2
What is 2/4 of 4?
3
2 × 344
688
4
18797 − 9492
9305
5
5 × 1.6
8
6
0.56 = ☐%
56
7
15 + 0.47
8
12 ÷ (−4)
If a = 1 b = 4 and c = 9, what is the value of
c2 − b3
(−10) − (−9)
9
10
Answer
No
2
15.47
−3
17
−1
Week 7
Session 4
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Week 7 Session 5
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Week 7 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐+3=5
2
2
15 + 85
100
3
Halve 2
1
4
196 − 10
186
5
188 + ☐ = 260
72
6
62 = 32 + ☐
30
7
604 − 601
3
8
8 × 4 = 32, so 32 ÷ 4 = ☐
8
9
Write 05:48 in 12 hour clock format
10
From 22:06, how many minutes until 22:28?
5:48 am
22
Week 7 Session 5
Timestables Answers
Q
Question
Answer
1
4×4=☐
16
2
8÷4=☐
2
3
8 × ☐ = 16
2
4
5÷☐=1
5
5
6×8=☐
48
6
9÷3=☐
3
7
☐ × 6 = 24
4
8
☐ ÷ 2 = 10
20
9
7×6=☐
42
10
70 ÷ 10 = ☐
7
Week 7 Session 5
Key Skills Answers
Q
2
Question
What is the highest common factor of 29 and
22?
What is 3/4 of 40?
3
6 × 564
3384
4
14786 − 8106
6680
5
9.4 × 7.4
69.56
6
2/10 as a decimal number
7
34.53 + 6.2
8
(−1) ÷ 1
If a = 4 b = 1 and c = 2, what is the value of
3a / 2 ?
1 − (−2)
1
9
10
Answer
1
30
0.2
40.73
−1
6
3
Week 7
Session 5
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Week 8 Session 1
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Week 8 Session 1
Mental Strategies Answers
Q
Question
Answer
1
8+2
10
2
What is double 4?
8
3
What is half of 33?
16.5
4
174 + 70
244
5
57 + 58
115
6
68 + 11 = 68 + 2 + ☐
7
5 + 822
8
79 + 52 = 79 + 50 + ☐
9
152 + 10
162
10
44 − 10
34
9
827
2
Week 8 Session 1
Timestables Answers
Q
Question
Answer
1
6×7=☐
42
2
2÷2=☐
1
3
10 × ☐ = 90
9
4
2÷☐=1
2
5
4×5=☐
20
6
45 ÷ 9 = ☐
5
7
☐ × 6 = 42
7
8
☐÷2=3
6
9
9×1=☐
9
10
7÷7=☐
1
Week 8 Session 1
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
10
Q
Question
Answer
1
List the first 4 multiples of 5
2
What is 65% of £100?
£65
3
4890 ÷ 5
978
4
8+4÷1
12
5
5.4 ÷ 2
2.7
6
100 × 0.97
97
7
26.93 − 4.83
22.1
8
Simplify 3/18
1/6
9
(−7) + 2
−5
10
See number line
8
5, 10, 15, 20
Week 8
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Week 8 Session 2
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Week 8 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 8 = 10
2
2
What is double 1?
2
3
What is half of 91?
45.5
4
60 + 20
80
5
12 + 9
21
6
84 + 11 = 84 + 6 + ☐
5
7
4 + 876
8
70 + 76 = 70 + 70 + ☐
6
9
71 + 10
81
10
198 − 60
138
880
Week 8 Session 2
Timestables Answers
Q
Question
Answer
1
7×7=☐
49
2
20 ÷ 4 = ☐
5
3
1×☐=7
7
4
54 ÷ ☐ = 6
9
5
9×9=☐
81
6
40 ÷ 10 = ☐
4
7
☐ × 6 = 18
3
8
☐÷4=5
20
9
3×2=☐
6
10
18 ÷ 6 = ☐
3
Week 8 Session 2
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
0
20
Q
Question
Answer
1
Is 16 a multiple of 2?
Yes
2
What is 60% of £220?
£132
3
7551 ÷ 9
839
4
11 − 3 ÷ 3
10
5
13.2 ÷ 2
6.6
6
10 × 0.88
8.8
7
22.68 − 8.44
14.24
8
Write 63/90 in its simplest form
7/10
9
Difference between 9 and −1
10
See number line
10
12.5
Week 8
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Week 8 Session 3
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Week 8 Session 3
Mental Strategies Answers
Q
Question
Answer
1
3+7
10
2
Double 3
6
3
What is half of 39?
19.5
4
127 + 50
177
5
95 + 92
187
6
90 + 11 = 90 + 10 + ☐
7
5 + 440
8
77 + 92 = 70 + 90 + ☐
9
9
26 + 10
36
10
111 − 50
61
1
445
Week 8 Session 3
Timestables Answers
Q
Question
Answer
1
5×9=☐
45
2
24 ÷ 6 = ☐
4
3
6 × ☐ = 36
6
4
80 ÷ ☐ = 10
8
5
5×1=☐
5
6
50 ÷ 10 = ☐
5
7
☐ × 6 = 12
2
8
☐÷1=4
4
9
8×7=☐
56
10
6÷1=☐
6
Week 8 Session 3
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
12
15
Q
Question
Answer
1
List the first 4 multiples of 11
2
What is 20% of £170?
£34
3
1437 ÷ 3
479
4
10 + 8 ÷ 2
14
5
3.2 ÷ 4
0.8
6
100 × 0.66
66
7
16.25 − 7.39
8.86
8
Simplify 20/25
4/5
9
Which is the highest number, −2 or −1?
−1
10
See number line
11, 22, 33, 44
12.5
Week 8
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Week 8 Session 4
Mental Strategies Answers
Q
Question
Answer
1
3+7
10
2
What is double 2?
4
3
What is half of 46?
23
4
28 + 30
58
5
27 + 24
51
6
79 + 6 = 79 + 1 + ☐
5
7
2 + 181
8
31 + 72 = 30 + 70 + ☐
3
9
16 + 10
26
10
132 − 80
52
183
Week 8 Session 4
Timestables Answers
Q
Question
Answer
1
5×3=☐
15
2
56 ÷ 8 = ☐
7
3
7 × ☐ = 49
7
4
28 ÷ ☐ = 7
4
5
4×7=☐
28
6
24 ÷ 4 = ☐
6
7
☐×7=7
1
8
☐÷8=8
64
9
1×3=☐
3
10
54 ÷ 9 = ☐
6
Week 8 Session 4
Key Skills Answers
5
4
3
2
1
0
Value of the dot?
4
6
Q
Question
Answer
1
List the first 4 multiples of 11
2
What is 65% of £170?
3
1395 ÷ 9
155
4
37 − 4 × 2
29
5
562.26 ÷ 6
93.71
6
100 × 1.66
166
7
16 − 6.8
9.2
8
Write 24/64 in its simplest form
3/8
9
Difference between −7 and 4
11
10
See number line
4.5
11, 22, 33, 44
£110.50
Week 8
Session 4
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Week 8 Session 5
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Week 8 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 8 = 10
2
2
What is double 8?
16
3
Halve 36
18
4
163 + 40
203
5
41 + 42
83
6
13 + 10 = 13 + 7 + ☐
3
7
4 + 844
8
56 + 23 = 56 + 20 + ☐
9
177 + 10
187
10
83 − 20
63
848
3
Week 8 Session 5
Timestables Answers
Q
Question
Answer
1
10 × 10 = ☐
100
2
56 ÷ 8 = ☐
7
3
4×☐=4
1
4
60 ÷ ☐ = 10
6
5
1×7=☐
7
6
30 ÷ 6 = ☐
5
7
☐×2=6
3
8
☐÷4=8
32
9
9×2=☐
18
10
56 ÷ 8 = ☐
7
Week 8 Session 5
Key Skills Answers
Q
5
4
3
2
1
0
Value of the dot?
0
1
2
Question
What is the lowest common multiple of 2 and
3?
What is 75% of £120?
3
237 ÷ 3
79
4
8+6×3
26
5
631.47 ÷ 7
90.21
6
1000 × 9.23
9230
7
88.87 − 3.68
85.19
8
Write 27/72 in its simplest form
9
(−2) + 2
10
See number line
1
Answer
6
£90
3/8
0
0.3
Week 8
Session 5
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Week 9 Session 1
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Week 9 Session 1
Mental Strategies Answers
Q
Question
1
☐ + 12 = 20
2
What is double 94?
188
3
168 + 10
178
4
45 − 20
25
5
9=3+☐
6
6
14 − 6 = 14 − 4 − ☐
2
7
39 = 39 × ☐
1
9
Draw hands on the clock face showing 11:10
pm
63 − 10
10
197 + 40
8
Answer
8
See clock above
53
237
Week 9 Session 1
Timestables Answers
Q
Question
Answer
1
7×3=☐
21
2
80 ÷ 10 = ☐
8
3
3×☐=9
3
4
16 ÷ ☐ = 8
2
5
10 × 2 = ☐
20
6
16 ÷ 8 = ☐
2
7
☐×9=9
1
8
☐÷7=7
49
9
4×8=☐
32
10
20 ÷ 4 = ☐
5
Week 9 Session 1
Key Skills Answers
Q
Question
1
What is the value of 43?
64
2
1/5 = 9/☐
45
3
3903 + 6770
4
(8 + 3) × 5
5
Write 881034 in words. (Use the opposite page
for your answer)
Answer
10673
55
Eight Hundred and
Eighty One Thousand
and Thirty Four
6
0.98 ÷ 100
0.0098
7
(−5) × (−8)
40
8
Round 6.5893 to 2 d.p.
9
5 + (−8)
−3
10
Round 423 to 2 s.f.
420
6.59
Week 9
Session 1
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Week 9 Session 2
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Week 9 Session 2
Mental Strategies Answers
Q
Question
Answer
1
10 + ☐ = 20
10
2
What is double 66?
132
3
10 + 10
20
4
102 − 20
82
5
9=1+☐
8
6
21 − 3 = 21 − 1 − ☐
2
7
17 + 17 + 17 = ☐ × 17
3
8
What time is shown on the clock?
9
161 − 10
151
10
80 + 70
150
1:05 pm
Week 9 Session 2
Timestables Answers
Q
Question
Answer
1
8×7=☐
56
2
70 ÷ 7 = ☐
10
3
4×☐=8
2
4
56 ÷ ☐ = 8
7
5
6×4=☐
24
6
90 ÷ 10 = ☐
9
7
☐ × 10 = 20
2
8
☐÷3=5
15
9
5×7=☐
35
10
40 ÷ 4 = ☐
10
Week 9 Session 2
Key Skills Answers
Q
Question
Answer
1
What is the value of ∛64?
4
2
10/4 = 50/☐
20
3
4626 + 2373
6999
4
(1 − 1)2 + 5 × 4
5
Write Eight Hundred and Seventy Nine
Thousand, Six Hundred and Thirty Five in digits
879635
6
0.92 ÷ 1000
0.00092
7
6 × (−7)
8
Round 56.7721 to 3 d.p.
9
7 + (−6)
10
Round 0.00876 to 2 s.f.
20
−42
56.772
1
0.0088
Week 9
Session 2
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Week 9 Session 3
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Week 9 Session 3
Mental Strategies Answers
Q
Question
1
12 + 8
20
2
What is double 53?
106
3
90 + 10
100
4
86 − 10
76
5
7=2+☐
5
6
53 − 11 = 53 − 3 − ☐
8
7
35 + 35 + 35 + 35 = 35 × ☐
4
9
Draw hands on the clock face showing twenty
past three
71 − 10
10
197 + 30
8
Answer
See clock above
61
227
Week 9 Session 3
Timestables Answers
Q
Question
Answer
1
5×6=☐
30
2
18 ÷ 3 = ☐
6
3
9 × ☐ = 90
10
4
32 ÷ ☐ = 8
4
5
2×5=☐
10
6
56 ÷ 7 = ☐
8
7
☐ × 2 = 10
5
8
☐÷7=9
63
9
10 × 5 = ☐
50
10
40 ÷ 8 = ☐
5
Week 9 Session 3
Key Skills Answers
Q
Question
1
What is the value of (−3) cubed?
−27
2
6/3 = 60/☐
30
3
810 + 1880
2690
4
6
(6 − 2) × 4
Write Five Hundred and Fifty Five Thousand,
Fifty Three in digits
6.41 ÷ 10
7
(−8) × 2
8
Round 5.8056 to 3 d.p.
9
3 + (−10)
10
Round 0.7588 to 2 s.f.
5
Answer
16
555053
0.641
−16
5.806
−7
0.76
Week 9
Session 3
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Week 9 Session 4
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Week 9 Session 4
Mental Strategies Answers
Q
Question
Answer
1
6 + 14
20
2
What is double 70?
140
3
176 + 10
186
4
176 − 10
166
5
7=6+☐
1
6
84 − 7 = 84 − 4 − ☐
3
7
52 + 52 + 52 = ☐ × 52
3
8
What time is shown on the clock?
9
113 − 10
103
10
148 + 30
178
2:40 am
Week 9 Session 4
Timestables Answers
Q
Question
Answer
1
6 × 10 = ☐
60
2
60 ÷ 6 = ☐
10
3
5 × ☐ = 35
7
4
24 ÷ ☐ = 3
8
5
9×4=☐
36
6
45 ÷ 9 = ☐
5
7
☐ × 5 = 15
3
8
☐÷8=9
72
9
1×3=☐
3
10
21 ÷ 3 = ☐
7
Week 9 Session 4
Key Skills Answers
Q
Question
1
What is the value of 10 cubed?
2
1/1 = ☐/5
3
1952 + 2298
4
6
(4 + 44) ÷ 6
Write One Thousand, Two Hundred and
Thirty Seven in digits
7.97 ÷ 10
7
(−4) × (−1)
8
Round 3.4417 to 2 d.p.
9
7 + (−10)
−3
10
Round 4 to 2 s.f.
4.0
5
Answer
1000
5
4250
8
1237
0.797
4
3.44
Week 9
Session 4
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Week 9 Session 5
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Week 9 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 12 = 20
8
2
Double 11
22
3
11 + 10
21
4
173 − 50
123
5
7=5+☐
2
6
30 − 11 = 30 − 10 − ☐
1
7
48 + 48 + 48 + 48 + 48 = ☐ × 48
5
8
What time is shown on the clock?
6:25 am
9
148 − 10
138
10
160 + 70
230
Week 9 Session 5
Timestables Answers
Q
Question
Answer
1
9×1=☐
9
2
3÷3=☐
1
3
2 × ☐ = 18
9
4
18 ÷ ☐ = 3
6
5
1 × 10 = ☐
10
6
30 ÷ 6 = ☐
5
7
☐×2=2
1
8
☐÷2=5
10
9
1×4=☐
4
10
36 ÷ 9 = ☐
4
Week 9 Session 5
Key Skills Answers
Q
Question
Answer
1
What is the value of (−3) cubed?
−27
2
1/7 = ☐/70
10
3
6286 + 2044
4
12 + 2 × 4
5
Write Three Million, Nine Hundred and Fifty Two
Thousand, Seven Hundred and Twenty in digits
6
5.9 ÷ 1000
7
6 × (−1)
−6
8
Round 5.3443 to 1 d.p.
5.3
9
(−4) + (−3)
−7
10
Round 0.5056 to 1 s.f.
0.5
8330
9
3952720
0.0059
Week 9
Session 5
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Ninja Score to see
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Week 10 Session 1
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Week 10 Session 1
Mental Strategies Answers
Q
Question
Answer
1
4+☐=5
1
2
31 + ☐ = 100
69
3
What is half of 6?
3
4
20 − 10
10
5
84 + ☐ = 120
36
6
93 = 33 + ☐
60
7
423 − 418
5
8
8 × 10 = 80, so 80 ÷ 8 = ☐
10
9
Write 22:11 in 12 hour clock format
10
12:25 is how many minutes after 12:20?
10:11 pm
5
Week 10 Session 1
Timestables Answers
Q
Question
Answer
1
1×5=☐
5
2
12 ÷ 4 = ☐
3
3
10 × ☐ = 70
7
4
7÷☐=1
7
5
7×1=☐
7
6
2÷2=☐
1
7
☐ × 10 = 30
3
8
☐÷3=3
9
9
9×5=☐
45
10
70 ÷ 10 = ☐
7
Week 10 Session 1
Key Skills Answers
Q
Question
Answer
1
(−4) − (−9)
5
2
Letter at (−2, −1)
Q
3
What is 1/1 of 10?
10
4
4 × 607
2428
5
1270 − 914
356
6
3×2
7
93/100 = ☐%
93%
8
3.66 + 35.33
38.99
9
5 ÷ (−5)
If a = 3 b = 1 and c = 6, what is the value of
a2b3 + 2c ?
10
6
−1
21
Week 10
Session 1
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Week 10 Session 2
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Week 10 Session 2
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
27 + ☐ = 100
73
3
What is half of 2?
1
4
179 − 10
169
5
163 + ☐ = 230
67
6
50 = 30 + ☐
20
7
733 − 732
1
8
10 × 3 = 30, so 30 ÷ 3 = ☐
10
9
Write 2:17 pm in 24 hour clock format
From 1:13 pm, how many minutes until 2:10
pm?
10
14:17
57
Week 10 Session 2
Timestables Answers
Q
Question
Answer
1
2×5=☐
10
2
18 ÷ 2 = ☐
9
3
5 × ☐ = 10
2
4
12 ÷ ☐ = 6
2
5
7×8=☐
56
6
30 ÷ 10 = ☐
3
7
☐×3=6
2
8
☐÷4=2
8
9
7×2=☐
14
10
4÷1=☐
4
Week 10 Session 2
Key Skills Answers
Q
Question
Answer
1
(−2) − (−1)
−1
2
Letter at (2, −2)
Z
3
What is 2/3 of 6?
4
4
45 × 28
1260
5
18059 − 9664
8395
6
1.3 × 3.9
5.07
7
0.18 = ☐%
18
8
4.56 + 83.2
87.76
9
35 ÷ (−5)
If a = 3 b = 5 and c = 5, what is the value of
2a + b/c ?
10
−7
7
Week 10
Session 2
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Week 10 Session 3
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Week 10 Session 3
Mental Strategies Answers
Q
Question
Answer
1
1+☐=5
4
2
50 + ☐ = 100
50
3
What is half of 4?
2
4
85 − 10
75
5
157 + ☐ = 210
53
6
78 = 8 + ☐
70
7
636 − 631
5
8
9 × 3 = 27, so 27 ÷ 9 = ☐
3
9
Write 9:13 am in 24 hour clock format
10
From 13:08, how many minutes until 14:07?
09:13
59
Week 10 Session 3
Timestables Answers
Q
Question
Answer
1
1×1=☐
1
2
3÷1=☐
3
3
7 × ☐ = 42
6
4
10 ÷ ☐ = 5
2
5
3×5=☐
15
6
63 ÷ 9 = ☐
7
7
☐ × 7 = 56
8
8
☐÷4=5
20
9
9×8=☐
72
10
7÷7=☐
1
Week 10 Session 3
Key Skills Answers
Q
Question
1
5 − (−5)
10
2
Letter at (1, −1)
T
3
What is 3/4 of 32?
24
4
3 × 868
2604
5
17597 − 9209
8388
6
4 × 8.99
35.96
7
9/10 = ☐%
90%
8
96.9 + 5.62
102.52
9
(−4) ÷ (−4)
If a = 8 b = 5 and c = 2, what is the value of
5a − bc ?
10
Answer
1
30
Week 10
Session 3
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Week 10 Session 4
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
16 + 84
100
3
Halve 7
3.5
4
160 − 10
150
5
194 + ☐ = 270
76
6
58 = 18 + ☐
40
7
976 − 973
3
8
8 × 5 = 40, so 40 ÷ 5 = ☐
8
9
Write 10:05 in 12 hour clock format
10
From 22:19, how many minutes until 22:30?
10:05 am
11
Week 10 Session 4
Timestables Answers
Q
Question
Answer
1
2×5=☐
10
2
7÷7=☐
1
3
1×☐=4
4
4
10 ÷ ☐ = 2
5
5
5×8=☐
40
6
35 ÷ 5 = ☐
7
7
☐ × 8 = 32
4
8
☐÷9=6
54
9
3×3=☐
9
10
8÷4=☐
2
Week 10 Session 4
Key Skills Answers
Q
Question
1
4 − (−5)
9
2
Letter at (1, 0)
N
3
What is 3/9 of 27?
9
4
5 × 323
5
999 − 937
62
6
9.8 × 74.61
731.178
7
7/10 = ☐%
70%
8
7.87 + 21.69
29.56
9
10 ÷ (−5)
If a = 6 b = 8 and c = 8, what is the value of
c / (b − a) ?
10
Answer
1615
−2
4
Week 10
Session 4
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Week 10 Session 5
Mental Strategies Answers
Q
Question
Answer
1
1+4
2
22 + 78
3
What is half of 4?
4
156 − 10
146
5
70 + ☐ = 80
10
6
106 = 46 + ☐
60
7
417 − 412
5
8
8 × 5 = 40, so 40 ÷ 5 = ☐
8
9
Write 09:37 in 12 hour clock format
10
8:35 am is how many minutes after 7:44 am?
5
100
2
9:37 am
51
Week 10 Session 5
Timestables Answers
Q
Question
Answer
1
3×8=☐
24
2
32 ÷ 4 = ☐
8
3
5 × ☐ = 45
9
4
40 ÷ ☐ = 4
10
5
1×4=☐
4
6
18 ÷ 2 = ☐
9
7
☐ × 4 = 16
4
8
☐ ÷ 10 = 8
80
9
7×8=☐
56
10
54 ÷ 9 = ☐
6
Week 10 Session 5
Key Skills Answers
Q
Question
1
2 − (−8)
10
2
Letter at (2, 1)
J
3
What is 2/5 of 45?
18
4
13 × 80
1040
5
1112 − 654
458
6
6 × 79.89
479.34
7
1.594 = ☐%
159.4
8
17 + 5.7
22.7
9
(−80) ÷ (−8)
If a = 1 b = 3 and c = 1, what is the value of
√(a + b)
10
Answer
10
2 (or −2)
Week 10
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Week 11 Session 1
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Week 11 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 8 = 10
2
2
What is double 4?
8
3
What is half of 70?
35
4
62 + 80 = ☐
142
5
156 + ☐ = 160
4
6
17 + 15 = ☐
32
7
6=3+☐
3
8
14 + 11 = 14 + 6 + ☐
5
9
1 + 896 = ☐
10
35 + 91 = 30 + 90 + ☐
897
6
Week 11 Session 1
Timestables Answers
Q
Question
Answer
1
10 × 8 = ☐
80
2
70 ÷ 10 = ☐
7
3
16 ÷ ☐ = 4
4
4
20 ÷ 4 = ☐
5
5
12 ÷ 6 = ☐
2
6
7 × ☐ = 49
7
7
7 × ☐ = 63
9
8
24 ÷ ☐ = 8
3
9
30 ÷ 5 = ☐
6
10
☐÷2=9
18
Week 11 Session 1
Key Skills Answers
Q
Question
1
371 ÷ 7 = ☐
53
2
2+9÷3
5
3
17.18 ÷ 0.2
85.9
4
0.04 × 10
0.4
5
70.11 − 23.48
46.63
6
Simplify 30/60
1/2
7
Difference between 2 and −3
5
8
Value of the dot
10
9
What is the value of 152?
225
10
What is 20% of £100?
£20
Answer
Week 11
Session 1
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Week 11 Session 2
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Week 11 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 7 = 10
3
2
What is double 1?
2
3
Halve 92
46
4
166 + 80 = ☐
246
5
108 + ☐ = 110
2
6
11 + 14 = ☐
25
7
5=2+☐
3
8
16 + 9 = 16 + 4 + ☐
5
9
6 + 333 = ☐
339
10
43 + 58 = 40 + 50 + ☐
11
Week 11 Session 2
Timestables Answers
Q
Question
1
☐ × 10 = 100
10
2
20 ÷ 10 = ☐
2
3
☐ × 7 = 28
4
4
☐ × 10 = 40
4
5
48 ÷ ☐ = 8
6
6
49 ÷ 7 = ☐
7
7
7 × ☐ = 70
10
8
30 ÷ 3 = ☐
10
9
5 × 10 = ☐
50
10
6÷2=☐
3
Answer
Week 11 Session 2
Key Skills Answers
Q
Question
1
729 ÷ 9 = ☐
81
2
7+4×2
15
3
6.51 ÷ 0.5
13.02
4
1000 × 4.06
4060
5
80 − 6.55
73.45
6
Write 3/6 in its simplest form
7
Difference between −9 and −2
7
8
Value of the dot
55
9
What is the positive square root of 81?
9
10
What is 105% of £20?
Answer
1/2
£21
Week 11
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 11 Session 3
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Week 11 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐ + 9 = 10
1
2
What is double 5?
10
3
What is half of 61?
30.5
4
145 + 40 = ☐
185
5
55 + ☐ = 60
5
6
70 + 71 = ☐
141
7
5=1+☐
4
8
81 + 14 = 81 + 9 + ☐
5
9
4 + 431 = ☐
10
96 + 73 = 96 + 70 + ☐
435
3
Week 11 Session 3
Timestables Answers
Q
Question
1
70 ÷ 10 = ☐
7
2
70 ÷ ☐ = 7
10
3
4×7=☐
28
4
4 × ☐ = 16
4
5
36 ÷ ☐ = 6
6
6
☐÷7=7
49
7
☐÷7=2
14
8
☐ × 9 = 27
3
9
35 ÷ 5 = ☐
7
10
☐ × 7 = 14
2
Answer
Week 11 Session 3
Key Skills Answers
Q
Question
1
198 ÷ 2 = ☐
99
2
2 × 2 + 10
14
3
13.39 ÷ 0.2
66.95
4
10 × 68.738
687.38
5
94 − 1.35
92.65
6
Simplify 12/48
1/4
7
6−7
−1
8
Value of the dot
65
9
What is the value of 8 squared?
64
10
What is 30% of £240?
£72
Answer
Week 11
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 11 Session 4
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Week 11 Session 4
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 2
8
2
What is double 4?
8
3
What is half of 42?
21
4
24 + 40 = ☐
64
5
105 + ☐ = 110
5
6
81 + 78 = ☐
7
3=1+☐
2
8
85 + 6 = 85 + 5 + ☐
1
9
5 + 128 = ☐
10
42 + 85 = 42 + 80 + ☐
159
133
5
Week 11 Session 4
Timestables Answers
Q
Question
Answer
1
70 ÷ ☐ = 7
10
2
☐ × 10 = 100
10
3
32 ÷ ☐ = 8
4
4
☐ ÷ 4 = 10
40
5
☐ × 2 = 12
6
6
63 ÷ 7 = ☐
9
7
56 ÷ 7 = ☐
8
8
3×3=☐
9
9
5 × ☐ = 30
6
10
☐÷2=8
16
Week 11 Session 4
Key Skills Answers
Q
Question
1
440 ÷ 5 = ☐
88
2
7 + 10 × 1
17
3
8.77 ÷ 0.1
87.7
4
1000 × 1.58
1580
5
33.6 − 1.72
31.88
6
Write 2/16 in its simplest form
1/8
7
Which is the lowest number, −9 or −6?
−9
8
Value of the dot
10
9
What is the value of 9 squared?
81
10
What is 120% of £100?
Answer
£120
Week 11
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 11 Session 5
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Week 11 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 9 = 10
1
2
What is double 4?
8
3
What is half of 93?
46.5
4
50 + 80 = ☐
130
5
156 + ☐ = 160
6
65 + 63 = ☐
7
7=3+☐
4
8
57 + 10 = 57 + 3 + ☐
7
9
6 + 808 = ☐
10
84 + 61 = 84 + 60 + ☐
4
128
814
1
Week 11 Session 5
Timestables Answers
Q
Question
1
10 × ☐ = 20
2
2
60 ÷ ☐ = 6
10
3
24 ÷ ☐ = 6
4
4
☐÷4=5
20
5
6 × ☐ = 54
9
6
7 × ☐ = 63
9
7
56 ÷ 7 = ☐
8
8
☐ × 10 = 30
3
9
5 × ☐ = 20
4
10
☐÷2=6
12
Answer
Week 11 Session 5
Key Skills Answers
Q
Question
1
355 ÷ 5 = ☐
71
2
3+2÷1
5
3
2 ÷ 0.1
20
4
0.51 × 100
51
5
85.338 − 6.39
78.948
6
Simplify 9/12
3/4
7
Which is the highest number, 3 or −7?
3
8
Value of the dot
45
9
What is the value of 122?
144
10
What is 80% of £180?
£144
Answer
Week 11
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 12 Session 1
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Week 12 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 19 = 20
2
What is double 60?
120
3
196 + 10 = ☐
206
4
170 − 90 = ☐
80
5
37 + 36 = ☐
73
6
6=1+☐
5
7
81 = 11 + ☐
70
8
21 − 6 = 21 − 1 − ☐
5
9
☐×3=3+3+3
3
10
Draw hands on the clock face showing 4:30
am
1
See clock above
Week 12 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 3 = 18
6
2
☐÷9=3
27
3
3 × ☐ = 21
7
4
☐÷7=5
35
5
☐ ÷ 7 = 10
70
6
20 ÷ 2 = ☐
10
7
5×2=☐
10
8
3 × ☐ = 30
10
9
36 ÷ ☐ = 4
9
10
12 ÷ 6 = ☐
2
Week 12 Session 1
Key Skills Answers
Q
Question
1
412 + 7355
7767
2
19 − 6 × 3
3
Write 30964 in words. Use the opposite
page for your answer.
4
8537.558 ÷ 1000
1
Thirty thousand, nine
hundred and sixty
four
8.537558
5
3 × (−3)
6
Round 5.7318 to 2 decimal places
7
7 + (−10)
8
Round 0.003524 to 3 s.f.
9
What is the value of (−10) cubed?
10
2/3 = 12/☐
Answer
−9
5.73
−3
0.00352
−1000
18
Week 12
Session 1
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Week 12 Session 2
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Week 12 Session 2
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 3
17
2
What is double 90?
180
3
29 + 10 = ☐
39
4
142 − 70 = ☐
72
5
85 + 86 = ☐
171
6
9=5+☐
7
149 = 20 + ☐
8
73 − 7 = 73 − 3 − ☐
4
9
8+8=☐×8
2
10
Draw hands on the clock face showing
11:15 am
4
129
See clock above
Week 12 Session 2
Timestables Answers
Q
Question
Answer
1
36 ÷ ☐ = 6
6
2
81 ÷ 9 = ☐
9
3
9÷☐=3
3
4
42 ÷ 7 = ☐
6
5
☐ × 9 = 63
7
6
8÷☐=4
2
7
5×2=☐
10
8
☐ × 6 = 18
3
9
9 × ☐ = 90
10
10
36 ÷ ☐ = 6
6
Week 12 Session 2
Key Skills Answers
Q
Question
1
419 + 8162
2
(5 + 55) ÷ 10
3
Write 33992 in words. Use the opposite
page for your answer.
4
8220.5 ÷ 100
5
9 × (−4)
6
Round 12.1734 to 2 decimal places
7
2 + (−6)
8
Round 5.02934 to 3 s.f.
9
What is the cube root of 1?
1
10
8/3 = 56/☐
21
Answer
8581
6
Thirty three thousand,
nine hundred and ninety
two
82.205
−36
12.17
−4
5.03
Week 12
Session 2
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Week 12 Session 3
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Week 12 Session 3
Mental Strategies Answers
Q
Question
Answer
1
6 + ☐ = 20
14
2
Double 76
152
3
127 + 10 = ☐
137
4
56 − 40 = ☐
16
5
25 + 23 = ☐
48
6
9=4+☐
5
7
128 = 10 + ☐
8
43 − 9 = 43 − 3 − ☐
6
9
3+3+3+3=☐×3
4
10
Draw hands on the clock face showing 3:30
pm
118
See clock above
Week 12 Session 3
Timestables Answers
Q
Question
Answer
1
☐ × 2 = 12
6
2
27 ÷ ☐ = 3
9
3
☐÷3=5
15
4
7×4=☐
28
5
7×8=☐
56
6
2 × ☐ = 14
7
7
☐÷5=2
10
8
3 × ☐ = 15
5
9
☐÷9=2
18
10
36 ÷ ☐ = 6
6
Week 12 Session 3
Key Skills Answers
Q
Question
1
428 + 8149
8577
2
(2 + 46) ÷ 8
6
3
Write 8372607 in words. Use the opposite
page for your answer.
4
52.405 ÷ 100
5
(−3) × 3
6
Round 48.5363 to 1 decimal place
48.5
7
(−6) + (−10)
−16
8
Round 0.006506 to 2 s.f.
9
What is the value of (−5) cubed?
10
9/10 = 72/☐
Answer
Eight million, three hundred
and seventy two thousand,
six hundred and seven
0.52405
−9
0.0065
−125
80
Week 12
Session 3
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Week 12 Session 4
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Week 12 Session 4
Mental Strategies Answers
Q
Question
Answer
1
19 + ☐ = 20
2
What is double 58?
116
3
11 + 10 = ☐
21
4
136 − 90 = ☐
46
5
77 + 74 = ☐
151
6
6=1+☐
5
7
82 = 70 + ☐
12
8
23 − 12 = 23 − 3 − ☐
9
9
5+5+5+5=☐×5
4
10
What time is shown on the clock?
1
2:50 pm
Week 12 Session 4
Timestables Answers
Q
Question
Answer
1
6×2=☐
12
2
☐÷9=4
36
3
3×☐=6
2
4
☐ × 3 = 21
7
5
☐ × 9 = 63
7
6
2×7=☐
14
7
☐ × 4 = 20
5
8
☐÷3=5
15
9
63 ÷ 9 = ☐
7
10
6 × ☐ = 12
2
Week 12 Session 4
Key Skills Answers
Q
Question
1
531 + 5672
2
7−1×2
3
Write Twenty Nine Thousand, Three
Hundred and Thirty in digits
4
8.789 ÷ 1000
5
(−3) × (−7)
21
6
Round 0.678 to 1 decimal place
0.7
7
(−2) + (−5)
−7
8
Round 78.7847 to 2 s.f.
79
9
What is the value of (−10) cubed?
10
5/9 = ☐/90
Answer
6203
5
29330
0.008789
−1000
50
Week 12
Session 4
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Week 12 Session 5
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Week 12 Session 5
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 5
15
2
What is double 99?
198
3
150 + 10 = ☐
160
4
119 − 50 = ☐
69
5
21 + 20 = ☐
41
6
6=4+☐
2
7
24 = 14 + ☐
10
8
16 − 8 = 16 − 6 − ☐
2
9
8+8+8+8+8=☐×8
5
10
Draw hands on the clock face showing 7:35
pm
See clock above
Week 12 Session 5
Timestables Answers
Q
Question
Answer
1
☐÷6=7
42
2
☐ × 4 = 36
9
3
☐÷3=8
24
4
56 ÷ ☐ = 8
7
5
63 ÷ ☐ = 9
7
6
2×5=☐
10
7
☐ × 6 = 30
5
8
3 × ☐ = 27
9
9
9 × ☐ = 63
7
10
☐ × 6 = 36
6
Week 12 Session 5
Key Skills Answers
Q
Question
1
8061 + 3290
11351
2
(3 + 57) ÷ 6
10
3
Write Sixty One Thousand, Five Hundred
and Sixteen in digits
4
73.45 ÷ 1000
5
(−1) × 4
6
Round 0.3441 to 2 decimal places
7
4 + (−2)
8
Round 0.001882 to 1 s.f.
0.0019
9
What is the value of ∛27?
3
10
6/3 = ☐/18
36
Answer
61516
0.07345
−4
0.34
2
Week 12
Session 5
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Week 13 Session 1
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Week 13 Session 1
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
100 = 73 + ☐
27
3
Halve 6
3
4
86 − 10 = ☐
76
5
5 + ☐ = 10
5
6
123 = 40 + ☐
83
7
365 − 357 = ☐
8
8
9 × 3 = 27, so 27 ÷ 3 = ☐
9
9
What is 22:44 in 12 hour clock format?
10
From 02:35, how many minutes until 02:50?
10:44 pm
15
Week 13 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 7 = 70
10
2
☐ × 2 = 12
6
3
☐÷7=9
63
4
7×9=☐
63
5
8×5=☐
40
6
15 ÷ ☐ = 3
5
7
3×6=☐
18
8
35 ÷ 5 = ☐
7
9
8÷☐=4
2
10
3 × ☐ = 12
4
Week 13 Session 1
Key Skills Answers
Q
Question
1
424 × 56 = ☐
23744
2
16277 − 9141
7136
3
7.6 × 3.6
27.36
4
3/4 as a decimal number
0.75
5
12.3 + 8.87
21.17
6
(−18) ÷ 3
−6
7
If a = 8 b = 10 and c = 6, what is the value
of c / (b − a) ?
3
8
(−8) − (−6)
−2
9
What is the letter at (−2, 0)?
K
10
What is 1/3 of 6?
2
Answer
Week 13
Session 1
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Week 13 Session 2
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Week 13 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐+2=5
3
2
79 + ☐ = 100
21
3
Halve 9
4.5
4
183 − 10 = ☐
173
5
174 + ☐ = 180
6
6
65 = 40 + ☐
25
7
5925 − 5917 = ☐
8
8
8 × 3 = 24, so 24 ÷ 8 = ☐
3
9
What is 8:32 pm in 24 hour clock format?
20:32
10
12:26 is how many minutes after 11:30?
56
Week 13 Session 2
Timestables Answers
Q
Question
Answer
1
☐ × 6 = 60
10
2
☐ ÷ 6 = 10
60
3
35 ÷ 7 = ☐
5
4
☐÷7=4
28
5
16 ÷ 8 = ☐
2
6
5 × ☐ = 45
9
7
☐ × 9 = 27
3
8
5 × ☐ = 15
3
9
2×6=☐
12
10
☐ × 7 = 21
3
Week 13 Session 2
Key Skills Answers
Q
Question
1
649 × 52 = ☐
2
1449 − 956
493
3
8.86 × 5.8
51.388
4
0.105 as a fraction
5
6.72 + 91.79
6
12 ÷ (−3)
−4
7
If a = 5 b = 4 and c = 2, what is the value of
√(a + b) ?
3
8
10 − (−7)
17
9
What is the letter at (−1, 1)?
G
10
What is 5/6 of 18?
15
Answer
33748
105/1000 (or 21/200)
98.51
Week 13
Session 2
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Week 13 Session 3
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Week 13 Session 3
Mental Strategies Answers
Q
Question
Answer
1
5=2+☐
3
2
54 + ☐ = 100
46
3
What is half of 7?
3.5
4
11 − 10 = ☐
1
5
47 + ☐ = 50
3
6
43 = 23 + ☐
20
7
603 − 596 = ☐
7
8
5 × 1 = 5, so 5 ÷ 1 = ☐
5
9
What is 4:56 pm in 24 hour clock format?
16:56
10
What time will it be 19 minutes after 3:37
am?
3:56 am
Week 13 Session 3
Timestables Answers
Q
Question
1
10 × ☐ = 80
8
2
18 ÷ ☐ = 3
6
3
35 ÷ ☐ = 5
7
4
☐ × 9 = 63
7
5
8×4=☐
32
6
☐ × 7 = 35
5
7
☐ × 10 = 30
3
8
☐÷5=9
45
9
☐÷2=7
14
10
3×8=☐
24
Answer
Week 13 Session 3
Key Skills Answers
Q
Question
1
316 × 75 = ☐
23700
2
8113 − 8043
70
3
1.88 × 5.8
4
8/10 = ☐ %
80
5
25.07 + 8.26
33.33
6
(−5) ÷ (−1)
5
7
If a = 8 b = 4 and c = 1, what is the value of
3a – b2 ?
8
8
9 − (−1)
10
9
What is the letter at (−2, 2)?
A
10
What is 2/3 of 9?
6
Answer
10.904
Week 13
Session 3
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Week 13 Session 4
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Week 13 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=3+☐
2
2
☐ + 29 = 100
71
3
Halve 7
3.5
4
143 − 10 = ☐
133
5
96 + ☐ = 100
4
6
141 = 81 + ☐
60
7
2070 − 2061 = ☐
9
8
3 × 4 = 12, so 12 ÷ 3 = ☐
4
9
What is 4:12 pm in 24 hour clock format?
16:12
10
3:36 am is how many minutes after 2:43
am?
53
Week 13 Session 4
Timestables Answers
Q
Question
1
100 ÷ 10 = ☐
10
2
48 ÷ ☐ = 8
6
3
7×8=☐
56
4
☐ × 4 = 28
7
5
72 ÷ ☐ = 9
8
6
40 ÷ 5 = ☐
8
7
18 ÷ ☐ = 6
3
8
5 × ☐ = 25
5
9
2×6=☐
12
10
12 ÷ 3 = ☐
4
Answer
Week 13 Session 4
Key Skills Answers
Q
Question
1
93 × 994 = ☐
2
1201 − 841
360
3
6.9 × 9
62.1
4
1/4 as a decimal number
0.25
5
18.775 + 4.19
6
100 ÷ (−10)
−10
7
If a = 5 b = 8 and c = 4 what is the value of
2a + b/c ?
12
8
(−1) − (−1)
0
9
What is the letter at (1, 2)?
D
10
What is 3/5 of 35?
21
Answer
92442
22.965
Week 13
Session 4
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Week 13 Session 5
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Week 13 Session 5
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
☐ + 63 = 100
37
3
Halve 2
1
4
40 − 10 = ☐
30
5
27 + ☐ = 30
3
6
106 = 76 + ☐
30
7
1588 − 1581 = ☐
7
8
4 × 9 = 36, so 36 ÷ 9 = ☐
4
9
What is 23:05 in 12 hour clock format?
11:05 pm
10
What time was it 51 minutes before 4:28
pm?
5:19 pm
Week 13 Session 5
Timestables Answers
Q
Question
Answer
1
40 ÷ ☐ = 4
10
2
54 ÷ 6 = ☐
9
3
☐ × 2 = 14
7
4
7×6=☐
42
5
☐ × 7 = 56
8
6
☐ × 5 = 25
5
7
15 ÷ ☐ = 5
3
8
☐ × 7 = 35
5
9
☐÷2=9
18
10
3×9=☐
27
Week 13 Session 5
Key Skills Answers
Q
Question
1
62 × 34 = ☐
2108
2
9445 − 7651
1794
3
8.6 × 4.1
35.26
4
50% as a fraction
5
6.97 + 4.89
11.86
6
(−20) ÷ (−2)
10
7
If a = 7 b = 3 and c = 3, what is the value of
3b2 ?
27
8
(−4) − (−2)
−2
9
What is the letter at (1, 0)?
N
10
What is 9/10 of 30?
27
Answer
1/2
Week 13
Session 5
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Ninja Score to see
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you’ve earned
today!
Week 14 Session 1
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Week 14 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 9 = 10
1
2
What is double 2?
4
3
Halve 55
4
42 + 30 = ☐
72
5
97 + 96 = ☐
193
6
17 + 11 = 17 + 3 + ☐
8
7
48 − 12 = 48 − 8 − ☐
4
8
296 − 288 = ☐
8
9
5 + 843 = ☐
10
84 + 34 = 84 + 30 + ☐
27.5
848
4
Week 14 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 4 = 16
4
2
5 × ☐ = 40
8
3
☐ × 10 = 70
7
4
4 × ☐ = 32
8
5
48 ÷ ☐ = 6
8
6
12 ÷ ☐ = 6
2
7
30 ÷ 10 = ☐
3
8
5×9=☐
45
9
☐ × 5 = 20
4
10
7 × ☐ = 56
8
Week 14 Session 1
Key Skills Answers
Q
Question
1
240 ÷ 8 = ☐
30
2
3+8÷2
7
3
56.98 ÷ 7
8.14
4
10 × 0.21
2.1
5
98.76 − 96.78
1.98
6
Simplify 3/24
1/8
7
Which is the lowest number, 9 or −1?
−1
8
List all the factors of 37
9
What is the positive value of √9?
10
What is 120% of £220?
Answer
1, 37
3
£264
Week 14
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 14 Session 2
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Week 14 Session 2
Mental Strategies Answers
Q
Question
Answer
1
10 = 6 + ☐
4
2
What is double 4?
8
3
What is half of 85?
42.5
4
129 + 50 = ☐
179
5
88 + 90 = ☐
178
6
8+9=8+2+☐
7
7
74 − 9 = 74 − 4 − ☐
5
8
928 − 924 = ☐
4
9
7 + 260 = ☐
267
10
28 + 56 = 20 + 50 + ☐
14
Week 14 Session 2
Timestables Answers
Q
Question
Answer
1
8÷☐=2
4
2
50 ÷ ☐ = 10
5
3
14 ÷ ☐ = 2
7
4
☐÷4=4
16
5
40 ÷ 8 = ☐
5
6
6÷2=☐
3
7
40 ÷ ☐ = 4
10
8
5×7=☐
35
9
4 × ☐ = 28
7
10
7×6=☐
42
Week 14 Session 2
Key Skills Answers
Q
Question
1
160 ÷ 5 = ☐
32
2
1×9−1
8
3
3.94 ÷ 0.1
39.4
4
100 × 0.16
16
5
96.5 − 25.83
6
Write 2/4 in its simplest form
1/2
7
Which is the lowest number, −2 or −1?
−2
8
Is 6 a factor of 21?
No
9
What is the value of (−2) squared?
10
What is 110% of £400?
Answer
70.67
4
£440
Week 14
Session 2
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 14 Session 3
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Week 14 Session 3
Mental Strategies Answers
Q
Question
Answer
1
6 + ☐ = 10
4
2
What is double 6?
12
3
What is half of 27?
13.5
4
169 + 80 = ☐
249
5
98 + 96 = ☐
194
6
26 + 5 = 26 + 4 + ☐
1
7
11 − 4 = 11 − 1 − ☐
3
8
5137 − 5132 = ☐
5
9
9 + 400 = ☐
10
33 + 46 = 33 + 40 + ☐
409
6
Week 14 Session 3
Timestables Answers
Q
Question
Answer
1
16 ÷ 4 = ☐
4
2
10 ÷ 5 = ☐
2
3
☐÷7=9
63
4
4×3=☐
12
5
24 ÷ ☐ = 3
8
6
16 ÷ ☐ = 8
2
7
10 × ☐ = 60
6
8
45 ÷ ☐ = 9
5
9
☐÷4=5
20
10
7×6=☐
42
Week 14 Session 3
Key Skills Answers
Q
Question
1
406 ÷ 7 = ☐
58
2
6+6÷3
8
3
164.45 ÷ 5
32.89
4
1000 × 68.378
68378
5
98.98 − 86.06
12.92
6
Simplify 6/9
7
Difference between −4 and −1
3
8
What is the highest common factor of 22
and 30?
2
9
What is the value of 12 squared?
10
What is 95% of £190?
Answer
2/3
144
£180.50
Week 14
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 14 Session 4
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Week 14 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5 + ☐ = 10
5
2
What is double 4?
8
3
Halve 55
27.5
4
105 + 50 = ☐
155
5
78 + 79 = ☐
157
6
81 + 13 = 81 + 9 + ☐
4
7
83 − 6 = 83 − 3 − ☐
3
8
481 − 478 = ☐
3
9
8 + 808 = ☐
816
10
84 + 56 = 80 + 50 + ☐
10
Week 14 Session 4
Timestables Answers
Q
Question
Answer
1
24 ÷ ☐ = 6
4
2
15 ÷ ☐ = 3
5
3
☐ × 10 = 70
7
4
4×3=☐
12
5
8×7=☐
56
6
☐÷2=4
8
7
☐ ÷ 10 = 4
40
8
5 × ☐ = 15
3
9
4×8=☐
32
10
☐ × 5 = 35
7
Week 14 Session 4
Key Skills Answers
Q
Question
1
200 ÷ 8 = ☐
25
2
10 ÷ 5 − 2
0
3
17.84 ÷ 0.5
35.68
4
0.58 × 100
58
5
83 − 5.69
77.31
6
Simplify 18/48
3/8
7
4−7
−3
8
List all the factors of 33
1, 3, 11, 33
9
What is the value of 12?
1
10
What is 5% of £150?
Answer
£7.50
Week 14
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 15 Session 1
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Week 14 Session 5
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 3
7
2
What is double 5?
10
3
What is half of 69?
34.5
4
31 + 30 = ☐
61
5
23 + 25 = ☐
48
6
43 + 8 = 43 + 7 + ☐
1
7
65 − 9 = 65 − 5 − ☐
4
8
8881 − 8878 = ☐
3
9
5 + 279 = ☐
10
13 + 13 = 10 + 10 + ☐
284
6
Week 14 Session 5
Timestables Answers
Q
Question
Answer
1
8÷☐=2
4
2
5×7=☐
35
3
56 ÷ ☐ = 8
7
4
☐ × 10 = 40
4
5
8 × ☐ = 56
7
6
14 ÷ ☐ = 7
2
7
10 × ☐ = 60
6
8
5 × ☐ = 35
7
9
☐×2=8
16
10
☐ × 10 = 70
7
Week 14 Session 5
Key Skills Answers
Q
Question
1
368 ÷ 8 = ☐
46
2
7×1+1
8
3
3.18 ÷ 3
1.06
4
1000 × 3.05
3050
5
47.06 − 3.3
43.76
6
Write 6/12 in its simplest form
1/2
7
Which is the lowest number, −8 or −2?
−8
8
List all the factors of 26
9
What is the value of 13 squared?
169
10
What is 80% of £100?
£80
Answer
1, 2, 13, 26
Week 14
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 15 Session 1
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Week 15 Session 1
Mental Strategies Answers
Q
Question
Answer
1
20 = 17 + ☐
2
What is double 90?
180
3
71 + 10 = ☐
81
4
85 − 80 = ☐
5
5
5=4+☐
1
6
73 + 14 = 73 + 7 + ☐
7
7
31 − 8 = 31 − 1 − ☐
7
8
1 + 276 = ☐
277
9
8+8=☐×8
2
10
Draw hands on the clock face showing 7:25
am
3
See clock above
Week 15 Session 1
Timestables Answers
Q
Question
Answer
1
9×3=☐
27
2
☐ × 3 = 24
8
3
63 ÷ 7 = ☐
9
4
32 ÷ ☐ = 4
8
5
48 ÷ 6 = ☐
8
6
☐÷3=7
21
7
☐÷8=9
72
8
☐ × 10 = 80
8
9
24 ÷ 3 = ☐
8
10
15 ÷ 3 = ☐
5
Week 15 Session 1
Key Skills Answers
Q
Question
1
599 + 7063
2
(5 − 2)2 + 1 × 4
3
Write 70323 in words. Use the opposite page for your
answer.
4
2.6 ÷ 100
5
(−2) × 5
6
Round 42.9673 to 2 decimal places
7
(−9) + (−4)
−13
8
What is the lowest common multiple of 3
and 5?
15
9
What is the cube root of 27?
3
10
1/8 = ☐/24
3
Answer
7662
13
Seventy thousand, three
hundred and twenty three
0.026
−10
42.97
Week 15
Session 1
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Ninja Score to see
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you’ve earned
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Week 15 Session 2
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Week 15 Session 2
Mental Strategies Answers
Q
Question
Answer
1
20 = 3 + ☐
17
2
What is double 48?
96
3
36 + 10 = ☐
46
4
39 − 20 = ☐
19
5
6=2+☐
4
6
5+7=5+5+☐
2
7
65 − 9 = 65 − 5 − ☐
4
8
3 + 307 = ☐
310
9
7+7=☐×7
2
10
What time is shown on the clock?
3:50 am
Week 15 Session 2
Timestables Answers
Q
Question
Answer
1
9 × ☐ = 54
6
2
☐÷8=5
40
3
70 ÷ 7 = ☐
10
4
☐÷8=9
72
5
6 × ☐ = 12
2
6
☐ × 8 = 24
3
7
☐÷8=6
48
8
☐ × 3 = 24
8
9
3 × 10 = ☐
30
10
3 × ☐ = 15
5
Week 15 Session 2
Key Skills Answers
Q
Question
1
211 + 2268
2479
2
42 + 3 × 4
3
Write 56980 in words. Use the opposite
page for your answer.
4
5.13 ÷ 100
54
Fifty six thousand,
nine hundred and
eighty
0.0513
5
(−1) × 7
6
Round 11.5775 to 1 decimal place
11.6
7
(−7) + (−10)
−17
8
Is 42 a multiple of 5?
No
9
What is the value of (−2) cubed?
−8
10
1/6 = 8/☐
48
Answer
−7
Week 15
Session 2
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Ninja Score to see
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Week 15 Session 3
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Week 15 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐ + 6 = 20
14
2
Double 72
144
3
192 + 10 = ☐
202
4
91 − 50 = ☐
41
5
4=1+☐
3
6
74 + 10 = 74 + 6 + ☐
4
7
77 − 13 = 77 − 7 − ☐
6
8
5 + 760 = ☐
9
9+9+9+9+9=☐×9
10
What time is shown on the clock?
765
5
1:35 pm
Week 15 Session 3
Timestables Answers
Q
Question
Answer
1
36 ÷ 9 = ☐
4
2
8×4=☐
32
3
☐÷7=5
35
4
8 × ☐ = 24
3
5
6 × ☐ = 18
3
6
3×2=☐
6
7
80 ÷ ☐ = 10
8
8
☐ × 6 = 48
8
9
☐×2=6
3
10
3 × ☐ = 21
7
Week 15 Session 3
Key Skills Answers
Q
Question
1
866 + 1459
2325
2
(10 + 8) × 3
54
3
Write 11641013 in words. Use the opposite
page for your answer.
4
76.4 ÷ 10
7.64
5
(−10) × 4
−40
6
Round 5.0393 to 1 decimal place
5.0
7
9 + (−7)
8
List the first 4 multiples of 4
9
What is the value of 43?
64
10
9/6 = 81/☐
54
Answer
Eleven million, six
hundred and forty one
thousand and thirteen
2
4, 8, 12, 16
Week 15
Session 3
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Ninja Score to see
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Week 15 Session 4
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Week 15 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 11 = 20
9
2
What is double 30?
60
3
91 + 10 = ☐
101
4
101 − 90 = ☐
11
5
9=2+☐
7
6
77 + 10 = 77 + 3 + ☐
7
7
57 − 11 = 57 − 7 − ☐
4
8
5 + 864 = ☐
9
8+8+8+8=☐×8
10
Draw hands on the clock face showing 7:50
am
869
4
See clock above
Week 15 Session 4
Timestables Answers
Q
Question
Answer
1
☐ × 9 = 81
9
2
☐÷8=8
64
3
7×8=☐
56
4
80 ÷ 8 = ☐
10
5
24 ÷ 6 = ☐
4
6
3×3=☐
9
7
☐ × 3 = 24
8
8
32 ÷ 8 = ☐
4
9
15 ÷ 3 = ☐
5
10
3×☐=6
2
Week 15 Session 4
Key Skills Answers
Q
Question
1
927 + 5601
6528
2
√36 + 12 ÷ 2
12
3
Write Three Hundred and Ninety Thousand, Eight
Hundred and Eighty Two in digits
4
498.8 ÷ 100
4.988
5
(−7) × (−4)
28
6
Round 58.8587 to 1 decimal place
7
5 + (−5)
0
8
What is the lowest common multiple of 7
and 8?
56
9
What is the value of (−10) cubed?
10
10/2 = ☐/14
Answer
390882
58.9
−1000
70
Week 15
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 15 Session 5
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Week 15 Session 5
Mental Strategies Answers
Q
Question
Answer
1
3 + ☐ = 20
17
2
Double 41
82
3
60 + 10 = ☐
70
4
75 − 30 = ☐
45
5
9=3+☐
6
6
21 + 16 = 21 + 9 + ☐
7
7
82 − 4 = 82 − 2 − ☐
2
8
6 + 968 = ☐
974
9
9+9=☐×9
2
10
What time is shown on the clock?
10:10 pm
Week 15 Session 5
Timestables Answers
Q
Question
Answer
1
36 ÷ 9 = ☐
4
2
56 ÷ 8 = ☐
7
3
7×6=☐
42
4
8×2=☐
16
5
36 ÷ 6 = ☐
6
6
☐ ÷ 3 = 10
30
7
☐ × 4 = 32
8
8
8×4=☐
32
9
☐ × 4 = 12
3
10
12 ÷ 3 = ☐
4
Week 15 Session 5
Key Skills Answers
Q
Question
1
820 + 2309
3129
2
(15 − 3) ÷ 6
2
3
Write 54481 in words. Use the opposite
page for your answer.
4
29.7 ÷ 10
5
(−2) × (−10)
6
Round 74.8937 to 2 decimal places
7
8 + (−5)
8
Is 38 a multiple of 9?
9
What is the value of ∛125?
5
10
3/4 = ☐/28
21
Answer
Fifty four thousand, four
hundred and eighty one
2.97
20
74.89
3
No
Week 15
Session 5
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Ninja Score to see
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Week 16 Session 1
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Week 16 Session 1
Mental Strategies Answers
Q
Question
Answer
1
5=☐+4
1
2
100 = ☐ + 62
38
3
What is half of 4?
2
4
190 − 10 = ☐
180
5
44 + ☐ = 50
6
6
161 = 140 + ☐
21
7
593 − 587 = ☐
6
8
4 × 7 = 28, so 28 ÷ 7 = ☐
4
9
What is 8:45 pm in 24 hour clock format?
20:45
10
4:42 am is how many minutes after 4:24
am?
18
Week 16 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 7 = 42
6
2
☐÷8=3
24
3
81 ÷ ☐ = 9
9
4
☐÷4=7
28
5
18 ÷ ☐ = 6
3
6
35 ÷ 7 = ☐
5
7
8 × ☐ = 80
10
8
5×9=☐
45
9
64 ÷ 8 = ☐
8
10
10 × 10 = ☐
100
Week 16 Session 1
Key Skills Answers
Q
Question
1
68 × 37
2516
2
12610 − 7906
4704
3
8.6 × 1.09
9.374
4
6/10 as a decimal number
5
8.043 + 6.96
15.003
6
(−54) ÷ (−9)
6
7
If a = 6 b = 3 and c = 5, what is the value of
5a − bc ?
15
8
Round 8635 to 2 s.f.
9
What is the letter at (0, −1)?
S
10
What is 2/5 of 35?
14
Answer
0.6
8600
Week 16
Session 1
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Ninja Score to see
which Ninja Belt
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Week 16 Session 2
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Week 16 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=3+☐
2
2
☐ + 93 = 100
7
3
What is half of 3?
1.5
4
55 − 10 = ☐
45
5
96 + ☐ = 100
4
6
158 = 58 + ☐
100
7
799 − 795 = ☐
4
8
7 × 9 = 63, so 63 ÷ 9 = ☐
7
9
What is 4:33 pm in 24 hour clock format?
16:33
10
13:28 is how many minutes after 13:11?
17
Week 16 Session 2
Timestables Answers
Q
Question
Answer
1
6 × ☐ = 54
9
2
8×8=☐
64
3
36 ÷ 9 = ☐
4
4
☐ × 8 = 32
4
5
☐÷3=9
27
6
7 × ☐ = 28
4
7
8×8=☐
64
8
☐ × 8 = 40
5
9
24 ÷ 8 = ☐
3
10
10 × 10 = ☐
100
Week 16 Session 2
Key Skills Answers
Q
Question
1
89 × 52 = ☐
4628
2
11371 − 7323
4048
3
4.5 × 3.7
16.65
4
3/4 = ☐ %
5
45.73 + 2.43
6
(−1) ÷ 1
−1
7
If a = 2 b = 2 and c = 1, what is the value of
√(a + b) ?
2
8
Round 758 to 2 s.f.
9
What is the letter at (1, 1)?
I
10
What is 3/7 of 14?
6
Answer
75
48.16
760
Week 16
Session 2
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
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Week 16 Session 3
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Week 16 Session 3
Mental Strategies Answers
Q
Question
Answer
1
5=☐+3
2
2
☐ + 4 = 100
96
3
What is half of 7?
3.5
4
142 − 10 = ☐
132
5
84 + ☐ = 90
6
6
53 = 10 + ☐
43
7
7012 − 7005 = ☐
7
8
7 × 2 = 14, so 14 ÷ 7 = ☐
2
9
What is 11:30 pm in 24 hour clock format?
10
What time will it be 46 minutes after 6:21
am?
23:30
7:07 am
Week 16 Session 3
Timestables Answers
Q
Question
Answer
1
18 ÷ 6 = ☐
3
2
32 ÷ 8 = ☐
4
3
☐÷9=4
36
4
☐÷4=6
24
5
☐ × 9 = 27
3
6
☐ ÷ 7 = 10
70
7
24 ÷ ☐ = 3
8
8
5×5=☐
25
9
☐÷8=6
48
10
☐ ÷ 10 = 7
70
Week 16 Session 3
Key Skills Answers
Q
Question
1
67 × 68 = ☐
4556
2
1993 − 999
994
3
2.5 × 2.45
6.125
4
2/5 = ☐ %
40
5
8 + 4.45
6
(−12) ÷ (−2)
6
7
If a = 4 b = 2 and c = 5, what is the value of
2abc − c2?
55
8
Round 0.002459 to 1 s.f.
9
What is the letter at (2, 1)?
J
10
What is 1/2 of 8?
4
Answer
12.45
0.002
Week 16
Session 3
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 16 Session 4
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Week 16 Session 4
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
100 = 40 + ☐
60
3
What is half of 5?
2.5
4
168 − 10 = ☐
158
5
22 + ☐ = 30
8
6
86 = 70 + ☐
16
7
7273 − 7266 = ☐
7
8
8 × 2 = 16, so 16 ÷ 2 = ☐
8
9
What is 10:25 pm in 24 hour clock format?
22:25
10
What time will it be 53 minutes after 07:17?
08:10
Week 16 Session 4
Timestables Answers
Q
Question
Answer
1
42 ÷ 6 = ☐
7
2
☐ × 9 = 72
8
3
27 ÷ ☐ = 3
9
4
☐ × 10 = 40
4
5
3 × ☐ = 24
8
6
7 × 10 = ☐
70
7
56 ÷ 8 = ☐
7
8
☐÷5=8
40
9
8 × ☐ = 40
5
10
100 ÷ 10 = ☐
10
Week 16 Session 4
Key Skills Answers
Q
Question
1
95 × 90 = ☐
8550
2
628 − 387
241
3
7.8 × 4
31.2
4
1/4 as a decimal number
0.25
5
13.97 + 8.49
22.46
6
(−12) ÷ (−2)
6
7
If a = 1 b = 4 and c = 4, what is the value of
4b3 ?
256
8
Round 33.002 to 3 s.f.
33.0
9
What is the letter at (−2, −2)?
V
10
What is 3/5 of 35?
21
Answer
Week 16
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 16 Session 5
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Week 16 Session 5
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
☐ + 14 = 100
86
3
Halve 8
4
4
200 − 10 = ☐
190
5
26 + ☐ = 30
4
6
87 = 47 + ☐
40
7
3125 − 3123 = ☐
2
8
2 × 7 = 14, so 14 ÷ 7 = ☐
2
9
What is 11:24 pm in 24 hour clock format?
10
6:54 pm is how many minutes after 6:28
pm?
23:24
26
Week 16 Session 5
Timestables Answers
Q
Question
Answer
1
6 × 10 = ☐
60
2
☐÷8=6
48
3
9×7=☐
63
4
4×6=☐
24
5
☐ × 7 = 21
3
6
49 ÷ 7 = ☐
7
7
8 × ☐ = 72
9
8
☐÷5=4
20
9
8 × ☐ = 16
2
10
☐ ÷ 10 = 3
30
Week 16 Session 5
Key Skills Answers
Q
Question
1
83 × 338 = ☐
2
487 − 383
104
3
7.1 × 8.5
60.35
4
1/5 as a decimal number
5
46.35 + 6.39
6
(−16) ÷ 4
−4
7
If a = 10 b = 3 and c = 4, what is the value
of 5a − bc ?
38
8
Round 834 to 2 s.f.
830
9
What is the letter at (1, 0)?
N
10
What is 7/9 of 27?
21
Answer
28054
0.2
52.74
Week 16
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 17 Session 1
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Week 17 Session 1
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 7
3
2
What is double 6?
12
3
Halve 41
20.5
4
129 + 80 = ☐
209
5
85 + 82 = ☐
167
6
61 + 11 = 61 + 9 + ☐
7
8 + 134 = ☐
142
8
8+8=☐×8
2
9
49 + 78 = 40 + 70 + ☐
17
10
What time is shown on the clock?
2
3:10 am
Week 17 Session 1
Timestables Answers
Q
Question
Answer
1
☐÷7=5
35
2
30 ÷ ☐ = 5
6
3
☐ × 8 = 24
3
4
8÷☐=2
4
5
☐÷4=5
20
6
15 ÷ 3 = ☐
5
7
2×5=☐
10
8
3×☐=9
3
9
☐×3=6
2
10
40 ÷ 5 = ☐
8
Week 17 Session 1
Key Skills Answers
Q
Question
1
295 ÷ 5
59
2
6 × 9 − 40
14
3
31.05 ÷ 9
3.45
4
5.66 × 10
56.6
5
21.12 − 20.65
0.47
6
Simplify 20/80
1/4
7
Which is the highest number, 6 or −7?
8
List all the factors of 20
9
What is the positive value of √225?
10
What is 5% of £130?
Answer
6
1, 2, 4, 5, 10, 20
15
£6.50
Week 17
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 17 Session 2
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Week 17 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 4 = 10
6
2
Double 4
8
3
Halve 23
11.5
4
14 + 90 = ☐
104
5
71 + 74 = ☐
145
6
68 + 8 = 68 + 2 + ☐
7
9 + 746 = ☐
8
☐×2=2+2+2+2+2
5
9
24 + 66 = 20 + 60 + ☐
10
10
What time is shown on the clock?
6
755
12:50 pm
Week 17 Session 2
Timestables Answers
Q
Question
Answer
1
63 ÷ ☐ = 9
7
2
48 ÷ ☐ = 8
6
3
12 ÷ ☐ = 4
3
4
4×5=☐
20
5
☐ × 4 = 16
4
6
3×7=☐
21
7
☐÷2=4
8
8
3 × 10 = ☐
30
9
12 ÷ 2 = ☐
6
10
☐÷5=8
40
Week 17 Session 2
Key Skills Answers
Q
Question
Answer
1
64 ÷ 2 = ☐
32
2
23 − 7 × 2
9
3
14.28 ÷ 7
2.04
4
1000 × 53.433
53433
5
99.44 − 46
53.44
6
Simplify 9/27
7
Difference between −3 and −2
8
List all the factors of 39
9
What is the positive value of √16?
10
What is 40% of £40?
1/3
1
1, 3, 13, 39
4
£16
Week 17
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 17 Session 3
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Week 17 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = 8 + ☐
2
2
Double 6
12
3
Halve 22
11
4
120 + 90 = ☐
210
5
11 + 9 = ☐
20
6
83 + 9 = 83 + 7 + ☐
2
7
1 + 781 = ☐
8
☐×8=8+8+8+8+8
5
9
43 + 98 = 40 + 90 + ☐
11
10
What time is shown on the clock?
782
12:45 am
Week 17 Session 3
Timestables Answers
Q
Question
Answer
1
7×9=☐
63
2
60 ÷ ☐ = 10
6
3
3 × ☐ = 21
7
4
☐ × 4 = 16
4
5
4×2=☐
8
6
6÷3=☐
2
7
6÷☐=3
2
8
12 ÷ ☐ = 4
3
9
☐×4=8
2
10
5×4=☐
20
Week 17 Session 3
Key Skills Answers
Q
Question
1
385 ÷ 5 = ☐
77
2
8+8×5
48
3
16.7 ÷ 0.2
83.5
4
0.85 × 100
85
5
85.041 − 5.63
6
Simplify 3/6
1/2
7
Difference between 9 and −6
15
8
What is the highest common factor of 7 and
11?
1
9
What is the value of 62?
36
10
What is 60% of £120?
£72
Answer
79.411
Week 17
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 17 Session 4
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Week 17 Session 4
Mental Strategies Answers
Q
Question
Answer
1
10 = 3 + ☐
7
2
What is double 5?
10
3
What is half of 69?
34.5
4
150 + 20 = ☐
170
5
74 + 71 = ☐
145
6
47 + 12 = 47 + 3 + ☐
7
6 + 643 = ☐
8
☐×2=2+2+2+2
4
9
65 + 84 = 65 + 80 + ☐
4
10
Draw hands on the clock face showing 2:05
pm
9
649
See clock above
Week 17 Session 4
Timestables Answers
Q
Question
Answer
1
42 ÷ ☐ = 6
7
2
6×4=☐
24
3
☐×2=6
3
4
☐ × 7 = 28
4
5
☐÷4=3
12
6
3 × ☐ = 30
10
7
14 ÷ 2 = ☐
7
8
12 ÷ ☐ = 4
3
9
2×9=☐
18
10
5×9=☐
45
Week 17 Session 4
Key Skills Answers
Q
Question
1
198 ÷ 2 = ☐
99
2
8 × 5 + 10
50
3
2.78 ÷ 0.2
13.9
4
3.18 × 10
31.8
5
79.78 − 3.12
76.66
6
Simplify 8/14
4/7
7
Which is the lowest number, −4 or −1?
−4
8
What is the highest common factor of 16
and 14?
2
9
What is the value of 9 squared?
81
10
What is 45% of £230?
Answer
£103.50
Week 17
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 17 Session 5
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Week 17 Session 5
Mental Strategies Answers
Q
Question
Answer
1
9 + ☐ = 10
1
2
What is double 1?
2
3
What is half of 25?
12.5
4
196 + 10 = ☐
206
5
16 + 19 = ☐
35
6
63 + 10 = 63 + 7 + ☐
3
7
5 + 737 = ☐
8
☐×3=3+3+3+3+3
5
9
78 + 57 = 70 + 50 + ☐
15
10
What time is shown on the clock?
742
6:10 pm
Week 17 Session 5
Timestables Answers
Q
Question
Answer
1
28 ÷ 7 = ☐
4
2
60 ÷ 6 = ☐
10
3
3×3=☐
9
4
4×9=☐
36
5
4 × ☐ = 36
9
6
☐ × 6 = 18
3
7
8÷☐=4
2
8
6÷3=☐
2
9
14 ÷ ☐ = 7
2
10
5 × ☐ = 30
6
Week 17 Session 5
Key Skills Answers
Q
Question
1
336 ÷ 7 = ☐
48
2
54 − 9 × 4
18
3
29.98 ÷ 0.5
59.96
4
100 × 0.32
32
5
66.06 − 7.63
58.43
6
Simplify 7/21
1/3
7
(−2) − 9
−11
8
What is the highest common factor of 44
and 16?
4
9
What is the positive value of √144?
12
10
What is 20% of £360?
£72
Answer
Week 17
Session 5
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Ninja Score to see
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Week 18 Session 1
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Week 18 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 14 = 20
2
What is double 76?
152
3
15 + 10 = ☐
25
4
156 − 90 = ☐
66
5
8=7+☐
1
6
49 − 17 = 49 − 9 − ☐
8
7
☐×8=8+8+8+8+8
5
8
8 × 9 = 72, so 72 ÷ 8 = ☐
9
9
37 + 91 = 37 + 90 +☐
1
10
What time is shown on the clock?
6
8:50 am
Week 18 Session 1
Timestables Answers
Q
Question
Answer
1
5 × ☐ = 40
8
2
16 ÷ 4 = ☐
4
3
21 ÷ 3 = ☐
7
4
10 × ☐ = 30
3
5
12 ÷ ☐ = 6
2
6
☐÷4=5
20
7
☐÷9=2
18
8
☐÷7=3
21
9
8÷☐=4
2
10
72 ÷ 8 = ☐
9
Week 18 Session 1
Key Skills Answers
Q
Question
1
146 + 4969
5115
2
(2 + 6) × 4
32
Answer
Four hundred and ninety
two thousand, seven
hundred and eighty five
3
Write 492785 in words
4
192.53 ÷ 10
19.253
5
(−9) × (−9)
81
6
Round 90.7114 to 2 decimal places
7
Value of the dot
8
List the first 4 multiples of 6
9
What is the value of (−3) cubed?
−27
10
1/5 = 10/☐
50
90.71
55
6, 12, 18, 24
Week 18
Session 1
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Ninja Score to see
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Week 18 Session 2
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Week 18 Session 2
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 8
12
2
What is double 54?
108
3
119 + 10 = ☐
129
4
119 − 90 = ☐
29
5
4=1+☐
3
6
73 − 7 = 73 − 3 − ☐
4
7
☐×9=9+9+9+9
4
8
3 × 8 = 24, so 24 ÷ 8 = ☐
3
9
42 + 54 = 42 + 50 + ☐
4
10
What time is shown on the clock?
8:50 am
Week 18 Session 2
Timestables Answers
Q
Question
Answer
1
15 ÷ ☐ = 3
5
2
4 × ☐ = 40
10
3
24 ÷ 3 = ☐
8
4
10 × ☐ = 90
9
5
2 × 10 = ☐
20
6
12 ÷ ☐ = 3
4
7
72 ÷ ☐ = 8
9
8
7×2=☐
14
9
2 × ☐ = 16
8
10
☐ × 4 = 32
8
Week 18 Session 2
Key Skills Answers
Q
Question
1
552 + 7241
2
(9 − 1)2 + 1 × 5
3
Write Seven Million, Eight Hundred and Eighty
Three Thousand and Eighty Four in digits
4
2613.4 ÷ 10
261.34
5
(−2) × (−4)
8
6
Round 5.5684 to 1 decimal place
7
Value of the dot
8
List the first 4 multiples of 15
15, 30, 45, 60
9
What is the cube root of 125?
5
10
3/7 = 21/☐
49
Answer
7793
69
7883084
5.6
6
Week 18
Session 2
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Ninja Score to see
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Week 18 Session 3
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Week 18 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐ + 5 = 20
15
2
What is double 40?
80
3
148 + 10 = ☐
158
4
97 − 50 = ☐
47
5
6=2+☐
4
6
86 − 7 = 86 − 6 − ☐
1
7
2+2=☐×2
2
8
8 × 4 = 32, so 32 ÷ 4 = ☐
8
9
25 + 95 = 25 + 90 + ☐
5
10
What time is shown on the clock?
12:15 pm
Week 18 Session 3
Timestables Answers
Q
Question
Answer
1
25 ÷ ☐ = 5
5
2
4×4=☐
16
3
☐ × 5 = 15
3
4
10 × ☐ = 20
2
5
2×3=☐
6
6
4×4=☐
16
7
36 ÷ 9 = ☐
4
8
☐ × 5 = 35
7
9
☐÷2=2
4
10
☐÷8=4
32
Week 18 Session 3
Key Skills Answers
Q
Question
1
5394 + 4619
2
32 + 1 × 3
Answer
10013
35
Nine million, nine hundred and
sixty four thousand, seven
hundred and sixty nine
3
Write 9964769 in words
4
2205.688 ÷ 1000
5
(−5) × 10
6
Round 9.0999 to 3 decimal places
7
Value of the dot
65
8
What is the lowest common multiple of 8
and 6?
24
9
What is the value of (−10) cubed?
10
3/8 = ☐/80
2.205688
−50
9.100
−1000
30
Week 18
Session 3
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Ninja Score to see
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Week 18 Session 4
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Week 18 Session 4
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 7
13
2
Double 30
60
3
78 + 10 = ☐
88
4
93 − 90 = ☐
3
5
6=5+☐
1
6
61 − 7 = 61 − 1 − ☐
6
7
☐×5=5+5+5+5
4
8
1 × 6 = 6, so 6 ÷ 1 = ☐
6
9
72 + 84 = 72 + 80 + ☐
4
10
What time is shown on the clock?
8:15 am
Week 18 Session 4
Timestables Answers
Q
Question
1
50 ÷ ☐ = 10
5
2
4 × ☐ = 12
3
3
24 ÷ 3 = ☐
8
4
10 × 7 = ☐
70
5
2×6=☐
12
6
4 × ☐ = 40
10
7
☐ × 8 = 72
9
8
☐÷7=9
63
9
2×7=☐
14
10
40 ÷ 8 = ☐
5
Answer
Week 18 Session 4
Key Skills Answers
Q
Question
1
782 + 1186
1968
2
(9 + 5) × 2
28
Answer
One hundred and fifty nine
thousand, three hundred
and thirteen
3
Write 159313 in words
4
1.97 ÷ 1000
5
9 × (−8)
6
Round 1.6283 to 3 decimal places
7
Value of the dot
8
Is 37 a multiple of 5?
No
9
What is the cube root of 1000?
10
10
10/8 = ☐/24
30
0.00197
−72
1.628
6
Week 18
Session 4
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Ninja Score to see
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Week 18 Session 5
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Week 18 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 9 = 20
11
2
What is double 16?
32
3
100 + 10 = ☐
110
4
125 − 60 = ☐
65
5
7=4+☐
3
6
27 − 15 = 27 − 7 − ☐
8
7
☐×5=5+5+5
3
8
7 × 1 = 7, so 7 ÷ 1 =☐
7
9
56 + 88 = 50 + 80 + ☐
14
10
What time is shown on the clock?
8:35 am
Week 18 Session 5
Timestables Answers
Q
Question
Answer
1
5 × ☐ = 35
7
2
☐÷4=7
28
3
☐ × 4 = 12
3
4
☐ × 2 = 20
10
5
20 ÷ 2 = ☐
10
6
4 × ☐ = 32
8
7
72 ÷ 9 = ☐
6
8
☐ × 5 = 35
7
9
2×9=☐
18
10
8×4=☐
32
Week 18 Session 5
Key Skills Answers
Q
Question
1
159 + 3885
2
(4 − 1)2 + 5 × 4
3
Write Two Million, One Hundred and Twenty Eight
Thousand, Eight Hundred and Eighty in digits
4
0.4 ÷ 10
5
(−10) × (−8)
6
Round 0.6601 to 3 decimal places
7
Value of the dot
6
8
What is the lowest common multiple of 5
and 6?
30
9
What is the cube root of 27?
3
10
3/5 = 15/☐
25
Answer
4044
29
2128880
0.04
80
0.660
Week 18
Session 5
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Ninja Score to see
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Week 19 Session 1
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Week 19 Session 1
Mental Strategies Answers
Q
Question
Answer
1
5=☐+2
3
2
100 = ☐ + 29
71
3
Halve 8
4
4
33 − 10 = ☐
23
5
108 + ☐ = 110
2
6
178 = 158 + ☐
20
7
986 − 983 = ☐
3
8
8 × 9 = 72, so 72 ÷ 9 = ☐
8
9
What is 21:57 in 12 hour clock format?
9:57 pm
10
What time will it be 41 minutes after 6:07
pm?
6:48 pm
Week 19 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 4 = 32
8
2
☐÷5=5
25
3
9×4=☐
36
4
15 ÷ ☐ = 3
5
5
2×8=☐
16
6
7×8=☐
56
7
30 ÷ ☐ = 10
3
8
3×☐=6
2
9
10 × 3 = ☐
30
10
☐÷2=5
10
Week 19 Session 1
Key Skills Answers
Q
Question
1
16 × 99 = ☐
1584
2
17049 − 9545
7504
3
1.8 × 8.8
15.84
4
1.29 = ☐%
129
5
68.3 + 7.24
75.54
6
(−4) ÷ (−1)
4
7
(−8) + (−5)
−13
8
Round 8939 to 3 s.f.
8940
9
What is the letter at (2, −2)?
Z
10
What is 5/8 of 24?
15
Answer
Week 19
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 19 Session 2
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Week 19 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=4+☐
1
2
100 = ☐ + 27
73
3
Halve 6
3
4
15 − 10 = ☐
5
5
148 + ☐ = 150
2
6
43 = 10 + ☐
33
7
4749 − 4746 = ☐
3
8
5 × 2 = 10, so 10 ÷ 5 = ☐
2
9
What is 15:10 in 12 hour clock format?
3:10 pm
10
What time will it be 28 minutes after 7:46
am?
8:14 am
Week 19 Session 2
Timestables Answers
Q
Question
Answer
1
80 ÷ 8 = ☐
10
2
☐ × 4 = 20
5
3
54 ÷ 9 = ☐
6
4
30 ÷ ☐ = 6
5
5
2×6=☐
12
6
☐ × 9 = 63
7
7
6÷☐=2
3
8
18 ÷ 3 = ☐
6
9
70 ÷ ☐ = 7
10
10
2×9=☐
18
Week 19 Session 2
Key Skills Answers
Q
Question
1
708 × 53 = ☐
2
1722 − 884
838
3
5.6 × 2
11.2
4
30% as a fraction
5
4.86 + 35.61
6
(−25) ÷ 5
−5
7
3 + (−10)
−7
8
Round 2444 to 3 s.f.
9
What is the letter at (0, 0)?
M
10
What is 3/5 of 25?
15
Answer
37524
30/100 (or 3/10)
40.47
2440
Week 19
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 19 Session 3
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Week 19 Session 3
Mental Strategies Answers
Q
Question
Answer
1
5=☐+2
3
2
100 = 27 + ☐
73
3
What is half of 9?
4.5
4
194 − 10 = ☐
184
5
76 + ☐ = 80
4
6
54 = 10 + ☐
44
7
5600 − 5594 = ☐
6
8
2 × 1 = 2, so 2 ÷ 2 = ☐
1
9
What is 21:04 in 12 hour clock format?
9:04 pm
10
What time will it be 11 minutes after 11:02
am?
11:13 am
Week 19 Session 3
Timestables Answers
Q
Question
Answer
1
☐÷8=8
64
2
☐÷5=2
10
3
9×2=☐
18
4
☐÷5=2
10
5
☐ × 7 = 14
2
6
49 ÷ 7 = ☐
7
7
☐ × 9 = 27
3
8
12 ÷ ☐ = 4
3
9
20 ÷ ☐ = 2
10
10
2×4=☐
8
Week 19 Session 3
Key Skills Answers
Q
Question
1
68 × 32 = ☐
2176
2
17353 − 9072
8281
3
4 × 1.3
4
120% as a fraction
5
8.75 + 91.27
6
(−8) ÷ (−8)
1
7
(−8) + (−10)
−18
8
Round 493902 to 2 s.f.
9
What is the letter at (1, 1)?
10
What is 5/8 of 72?
Answer
5.2
120/100 (or 6/5)
100.02
490000
I
45
Week 19
Session 3
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Ninja Score to see
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you’ve earned
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Week 19 Session 4
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Week 19 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=1+☐
4
2
100 = 50 + ☐
50
3
Halve 1
0.5
4
11 − 10 = ☐
1
5
116 + ☐ = 120
4
6
140 = 20 + ☐
120
7
5923 − 5915 = ☐
8
8
6 × 8 = 48, so 48 ÷ 8 = ☐
6
9
What is 16:48 in 12 hour clock format?
4:48 pm
10
What time will it be 59 minutes after 1:09
pm?
2:08 pm
Week 19 Session 4
Timestables Answers
Q
Question
Answer
1
8×2=☐
16
2
5 × ☐ = 25
5
3
90 ÷ ☐ = 10
9
4
5×8=☐
40
5
20 ÷ ☐ = 10
2
6
☐÷7=6
42
7
3 × ☐ = 15
5
8
☐×2=6
3
9
70 ÷ ☐ = 7
10
10
☐ × 8 = 16
2
Week 19 Session 4
Key Skills Answers
Q
Question
1
95 × 538 = ☐
34970
2
7088 − 3934
3154
3
2.3 × 6.4
14.72
4
7/10 as a decimal number
0.7
5
2.39 + 1.8
4.19
6
30 ÷ (−3)
−10
7
(−3) + (−1)
−4
8
Round 0.009484 to 1 s.f.
9
What is the letter at (−2, −1)?
Q
10
What is 4/7 of 42?
24
Answer
0.009
Week 19
Session 4
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Ninja Score to see
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Week 19 Session 5
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Week 19 Session 5
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
95 + ☐ = 100
5
3
What is half of 6?
3
4
94 − 10 = ☐
84
5
98 + ☐ = 100
2
6
55 = 15 + ☐
40
7
168 − 162 = ☐
6
8
4 × 1 = 4, so 4 ÷ 1 =☐
4
9
What is 1:41 am in 24 hour clock format?
10
From 8:09 am, how many minutes until 8:50
am?
01:41
41
Week 19 Session 5
Timestables Answers
Q
Question
Answer
1
8 × ☐ = 80
10
2
10 ÷ ☐ = 2
5
3
90 ÷ ☐ = 10
9
4
☐÷5=3
15
5
2 × ☐ = 10
5
6
7×9=☐
63
7
☐ × 7 = 21
3
8
☐ × 5 = 15
3
9
☐ × 9 = 90
10
10
8÷☐=4
2
Week 19 Session 5
Key Skills Answers
Q
Question
1
652 × 61 = ☐
39772
2
2766 − 1463
1303
3
3.26 × 7
22.82
4
5/10 as a decimal number
5
62.25 + 7.78
6
35 ÷ (−5)
−7
7
9 + (−6)
3
8
Round 66323 to 3 s.f.
9
What is the letter at (2, −2)?
Z
10
What is 3/9 of 36?
12
Answer
0.5
70.03
66300
Week 19
Session 5
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Ninja Score to see
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Week 20 Session 1
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Week 20 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐+2=5
3
2
☐ + 7 = 10
3
3
What is double 6?
12
4
Halve 72
36
5
120 + 20 = ☐
140
6
98 + 100 = ☐
198
7
15 + 11 = 15 + 5 + ☐
8
5 + 626 = ☐
9
54 + 65 = 50 + 60 + ☐
10
What is 4:17 pm in 24 hour clock format?
6
631
9
16:17
Week 20 Session 1
Timestables Answers
Q
Question
Answer
1
5×2=☐
10
2
☐ × 6 = 48
8
3
2×8=☐
16
4
☐ × 7 = 42
6
5
☐ ÷ 6 = 10
60
6
35 ÷ ☐ = 5
7
7
☐÷7=2
14
8
☐ ÷ 6 = 10
60
9
10 ÷ 5 = ☐
2
10
10 × ☐ = 40
4
Week 20 Session 1
Key Skills Answers
Q
Question
1
496 ÷ 8 = ☐
62
2
4÷4+3
4
3
293.58 ÷ 9
32.62
4
10 × 80.859
808.59
5
90 − 4.04
85.96
6
Write 25/30 in its simplest form
5/6
7
(−1) − (−5)
−4
8
List all the factors of 38
9
What is the positive square root of 121?
10
What is 50% of £30?
Answer
1, 2, 19, 38
11
£15
Week 20
Session 1
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Ninja Score to see
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Week 20 Session 2
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Week 20 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=☐+4
1
2
10 = ☐ + 2
8
3
What is double 9?
18
4
What is half of 51?
25.5
5
150 + 90 = ☐
240
6
39 + 40 = ☐
79
7
85 + 13 = 85 + 5 + ☐
8
8
2 + 632 = ☐
634
9
78 + 33 = 70 + 30 + ☐
11
10
What is 21:44 in 12 hour clock format?
9:44 pm
Week 20 Session 2
Timestables Answers
Q
Question
Answer
1
50 ÷ 5 = ☐
10
2
☐÷8=3
24
3
☐ × 7 = 14
2
4
6 × ☐ = 48
8
5
☐ × 9 = 54
6
6
☐÷7=6
42
7
☐ × 7 = 49
7
8
☐ × 4 = 24
6
9
5×2=☐
10
10
10 × 9 = ☐
90
Week 20 Session 2
Key Skills Answers
Q
Question
1
108 ÷ 4 = ☐
27
2
5÷1−5
0
3
203.63 ÷ 7
29.09
4
10 × 0.52
5.2
5
97.3 − 2.08
6
Simplify 9/18
7
3 − (−4)
8
Is 8 a factor of 24?
9
What is the positive value of √16?
10
What is 115% of £290?
Answer
95.22
1/2
7
Yes
4
£333.50
Week 20
Session 2
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Ninja Score to see
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you’ve earned
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Week 20 Session 3
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Week 20 Session 3
Mental Strategies Answers
Q
Question
Answer
1
1+☐=5
4
2
10 = ☐ + 6
4
3
What is double 6?
12
4
Halve 12
6
5
183 + 80 = ☐
263
6
87 + 86 = ☐
173
7
27 + 9 = 27 + 3 + ☐
8
5 + 716 = ☐
9
83 + 32 = 80 + 30 + ☐
10
What is 12:50 am in 24 hour clock format?
6
721
5
00:50
Week 20 Session 3
Timestables Answers
Q
Question
1
☐ × 10 = 50
5
2
56 ÷ 8 = ☐
7
3
4÷2=☐
2
4
6×8=☐
48
5
60 ÷ ☐ = 10
6
6
7×2=☐
14
7
☐ × 8 = 56
7
8
☐ × 8 = 48
6
9
☐ × 6 = 30
5
10
☐ ÷ 10 = 4
40
Answer
Week 20 Session 3
Key Skills Answers
Q
Question
Answer
1
22 ÷ 2 = ☐
11
2
5+8×5
45
3
3.43 ÷ 0.2
17.15
4
1000 × 55.239
55239
5
87 − 8.27
78.73
6
Write 10/25 in its simplest form
2/5
7
(−8) − (−1)
−7
8
Is 1 a factor of 2?
Yes
9
What is the value of (−5) squared?
10
What is 95% of £230?
25
£218.50
Week 20
Session 3
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Ninja Score to see
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you’ve earned
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Week 20 Session 4
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Week 20 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=4+☐
1
2
☐ + 2 = 10
8
3
Double 2
4
4
What is half of 32?
16
5
191 + 80 = ☐
271
6
49 + 46 = ☐
95
7
9+4=9+1+☐
3
8
9 + 722 = ☐
9
48 + 12 = 48 + 10 + ☐
10
What is 3:25 pm in 24 hour clock format?
731
2
15:25
Week 20 Session 4
Timestables Answers
Q
Question
Answer
1
☐÷5=2
10
2
☐÷8=2
16
3
☐÷2=3
6
4
6×7=☐
42
5
☐ × 7 = 56
8
6
☐ × 10 = 70
7
7
35 ÷ 7 = ☐
5
8
☐÷6=8
48
9
5 × ☐ = 40
8
10
10 × 7 = ☐
70
Week 20 Session 4
Key Skills Answers
Q
Question
1
360 ÷ 9 = ☐
40
2
18 − 5 × 1
13
3
9.45 ÷ 7
1.35
4
0.43 × 10
4.3
5
52.59 − 32.88
19.71
6
Simplify 16/30
8/15
7
(−8) − (−5)
−3
8
What is the highest common factor of 25
and 15?
5
9
What is the positive square root of 4?
2
10
What is 55% of £60?
Answer
£33
Week 20
Session 4
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Week 20 Session 5
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Week 20 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐+1=5
4
2
9 + ☐ = 10
1
3
What is double 7?
14
4
What is half of 87?
43.5
5
134 + 10 = ☐
144
6
66 + 63 = ☐
129
7
54 + 13 = 54 + 6 + ☐
8
8 + 947 = ☐
9
55 + 34 = 55 + 30 + ☐
10
What is 15:16 in 12 hour clock format?
7
955
4
3:16 pm
Week 20 Session 5
Timestables Answers
Q
Question
Answer
1
☐÷5=5
25
2
☐÷8=8
64
3
☐ × 5 = 10
2
4
☐ × 9 = 54
6
5
☐÷6=5
30
6
7 × ☐ = 14
2
7
7 × ☐ = 56
8
8
18 ÷ 6 = ☐
3
9
☐ × 6 = 30
5
10
30 ÷ 10 = ☐
3
Week 20 Session 5
Key Skills Answers
Q
Question
1
189 ÷ 9 = ☐
21
2
83 − 9 × 1
74
3
348.44 ÷ 4
87.11
4
0.05 × 100
5
5
72.02 − 11.85
6
Write 2/10 in its simplest form
1/5
7
3 − (−10)
13
8
List all the factors of 26
1, 2, 13, 26
9
What is the value of 62?
36
10
What is 30% of £330?
£99
Answer
60.17
Week 20
Session 5
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Ninja Score to see
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Week 21 Session 1
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Week 21 Session 1
Mental Strategies Answers
Q
Question
Answer
1
10 = 7 + ☐
3
2
☐ + 2 = 20
18
3
Double 44
88
4
144 + 10 = ☐
154
5
70 − 30 = ☐
40
6
3=2+☐
1
7
54 − 9 = 54 − 4 – ☐
5
8
6+6=☐×6
2
9
What time is shown on the clock?
10
From 6:40 pm, how many minutes until 6:52
pm?
8:00 pm
12
Week 21 Session 1
Timestables Answers
Q
Question
Answer
1
7×9=☐
63
2
☐×2=6
3
3
☐ × 8 = 56
7
4
24 ÷ ☐ = 3
8
5
☐÷4=3
12
6
☐÷2=5
10
7
5 × ☐ = 10
2
8
20 ÷ ☐ = 2
10
9
10 × ☐ = 30
3
10
☐ × 10 = 80
8
Week 21 Session 1
Key Skills Answers
Q
Question
Answer
1
980 + 7789
8769
2
(1 + 7) × 3
24
3
Write Sixty One Million, Seven Hundred and Forty Eight
Thousand, Eight Hundred and Sixty Seven in digits
4
4889.92 ÷ 100
5
(−9) × (−1)
6
Round 0.0325 to 3 decimal places
7
Value of the dot
27
8
Is 13 a multiple of 9?
No
9
What is the value of 2³?
8
10
10/2 = 50/☐
10
61 748 867
48.8992
9
0.033
Week 21
Session 1
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Week 21 Session 2
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Week 21 Session 2
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 3
7
2
20 = 15 + ☐
5
3
What is double 34?
68
4
168 + 10 = ☐
178
5
117 − 70 = ☐
47
6
4=3+☐
1
7
51 − 10 = 51 − 1 − ☐
9
8
3+3=☐×3
2
9
What time is shown on the clock?
12:35 am
10
What time was it 59 minutes before 4:00
pm?
3:01 pm
Week 21 Session 2
Timestables Answers
Q
Question
Answer
1
7 × 10 = ☐
70
2
9÷3=☐
3
3
☐÷7=4
28
4
8 × ☐ = 48
6
5
4 × ☐ = 24
6
6
☐÷2=5
10
7
5 × ☐ = 30
6
8
10 × 5 = ☐
50
9
70 ÷ ☐ = 7
10
10
☐ × 10 = 80
8
Week 21 Session 2
Key Skills Answers
Q
Question
Answer
1
765 + 8937
9702
2
5−1×2
3
Write 59168 in words. Use the opposite
page for your answer.
4
16.942 ÷ 10
5
10 × (−10)
−100
6
Round 0.6938 to 2 decimal places
0.69
7
Value of the dot
8
List the first 4 multiples of 15
9
What is the value of 2³?
8
10
10/1 = ☐/6
60
3
Fifty nine thousand,
one hundred and sixty
eight
1.6942
35
15, 30, 45, 60
Week 21
Session 2
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Ninja Score to see
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Week 21 Session 3
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Week 21 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 3
7
2
5 + ☐ = 20
15
3
Double 79
158
4
71 + 10 = ☐
81
5
139 − 70 = ☐
69
6
8=2+☐
6
7
65 − 14 = 65 − 5 − ☐
9
8
9+9=☐×9
2
9
What time is shown on the clock?
10
From 9:46 am, how many minutes until
10:17 am?
4:50 am
31
Week 21 Session 3
Timestables Answers
Q
Question
Answer
1
☐÷7=5
35
2
☐ × 9 = 27
3
3
7 × ☐ = 49
7
4
☐ × 7 = 56
8
5
8÷4=☐
2
6
2×☐=8
4
7
☐÷5=2
10
8
30 ÷ ☐ = 3
10
9
☐ × 10 = 100
10
10
8 × ☐ = 16
2
Week 21 Session 3
Key Skills Answers
Q
Question
Answer
1
4391 + 7776
12 167
2
2² + 4 × 5
3
Write 57901 in words. Use the opposite
page for your answer.
4
8.334 ÷ 10
0.8334
5
(−2) × (−4)
8
6
Round 1.3125 to 1 decimal place
7
Value of the dot
8
What is the lowest common multiple of 3 and 8?
24
9
What is the value of ∛1000?
10
24
Fifty seven
thousand, nine
hundred and one
1.3
6
30
Week 21
Session 3
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Ninja Score to see
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Week 21 Session 4
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Week 21 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 5 = 10
5
2
20 = 1 + ☐
19
3
Double 15
30
4
177 + 10 = ☐
187
5
81 − 40 = ☐
41
6
8=6+☐
2
7
72 − 5 = 72 − 2 − ☐
3
8
2+2+2=☐×2
3
9
Draw hands on the clock face showing 7:30 am
10
What time was it 44 minutes before 9:31
pm?
See above
8:47 pm
Week 21 Session 4
Timestables Answers
Q
Question
Answer
1
56 ÷ ☐ = 8
7
2
☐÷3=2
6
3
☐÷7=7
49
4
56 ÷ ☐ = 7
8
5
☐ × 9 = 36
4
6
2 × ☐ = 18
9
7
5 × ☐ = 25
5
8
☐ × 2 = 20
10
9
20 ÷ ☐ = 2
10
10
8 × ☐ = 32
4
Week 21 Session 4
Key Skills Answers
Q
Question
Answer
1
8073 + 9792
17 865
2
(51 − 3) ÷ 8
6
3
Write 72506042 in words. Use the opposite page
for your answer.
4
276.83 ÷ 100
5
(−6) × 9
6
Round 32.3798 to 2 decimal places
7
Value of the dot
45
8
What is the lowest common multiple of 4 and 7?
28
9
What is the cube root of 64?
4
10
9/10 = ☐/100
90
Seventy two million, five
hundred and six thousand
and forty two
2.7683
−54
32.38
Week 21
Session 4
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Ninja Score to see
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Week 21 Session 5
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Week 21 Session 5
Mental Strategies Answers
Q
Question
Answer
1
10 = 5 + ☐
5
2
3 + ☐ = 20
17
3
Double 85
170
4
151 + 10 = ☐
161
5
70 − 40 = ☐
30
6
3=1+☐
2
7
78 − 15 = 78 − 8 − ☐
7
8
☐×8=8+8+8+8
4
9
What time is shown on the clock?
10
4:08 pm is how many minutes after 3:13
pm?
9:10 am
55
Week 21 Session 5
Timestables Answers
Q
Question
Answer
1
21 ÷ ☐ = 3
7
2
30 ÷ 3 = ☐
10
3
28 ÷ 7 = ☐
4
4
8 × ☐ = 16
2
5
32 ÷ ☐ = 8
4
6
4÷2=☐
2
7
25 ÷ 5 = ☐
5
8
☐ ÷ 10 = 10
100
9
☐ × 2 = 20
10
10
☐ × 6 = 48
8
Week 21 Session 5
Key Skills Answers
Q
Question
Answer
1
7500 + 8690
16 190
2
(3 + 32) ÷ 7
5
3
Write 31428472 in words. Use the opposite
page for your answer.
4
0.75 ÷ 10
0.075
5
(−9) × (−7)
63
6
Round 4.2327 to 1 decimal place
4.2
7
Value of the dot
12
8
Is 41 a multiple of 7?
No
9
What is the value of 2 cubed?
8
10
7/8 = 49/☐
56
Thirty one million, four
hundred and twenty eight
thousand, four hundred and
seventy two
Week 21
Session 5
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 22 Session 1
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Week 22 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐+4=5
1
2
☐ + 85 = 100
15
3
What is half of 4?
2
4
99 − 10 = ☐
89
5
55 + ☐ = 60
5
6
119 = 99 + ☐
20
7
148 − 139 = ☐
9
8
5 × 9 = 45, so 45 ÷ 5 = ☐
9
9
What is 20:27 in 12 hour clock format?
10
From 7:19 am, how many minutes until 7:50
am?
8:27 pm
31
Week 22 Session 1
Timestables Answers
Q
Question
Answer
1
7×6=☐
42
2
24 ÷ ☐ = 8
3
3
☐ × 7 = 14
2
4
☐÷8=9
72
5
18 ÷ 3 = ☐
6
6
4 × ☐ = 36
9
7
5 × ☐ = 40
8
8
4×4=☐
16
9
36 ÷ ☐ = 4
9
10
30 ÷ ☐ = 3
10
Week 22 Session 1
Key Skills Answers
Q
Question
Answer
1
242 × 56 = ☐
13 552
2
17916 − 9991
7925
3
2.6 × 6.7
17.42
4
0.26 as a fraction
5
3.45 + 87.28
90.73
6
(−10) ÷ (−1)
10
7
8 + (−10)
−2
8
Round 0.002788 to 2 s.f.
9
What is the letter at (1,−2)?
Y
10
What is 9/10 of 30?
27
26/100 (or 13/50)
0.0028
Week 22
Session 1
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 22 Session 2
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Week 22 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐+2=5
3
2
10 + ☐ = 100
90
3
Halve 6
3
4
79 − 10 = ☐
69
5
24 + ☐ = 30
6
6
94 = 34 + ☐
60
7
360 − 353 = ☐
7
8
1 × 3 = 3, so 3 ÷ 3 = ☐
1
9
What is 7:20 pm in 24 hour clock format?
10
From 1:33 pm, how many minutes until 1:51
pm?
19:20
18
Week 22 Session 2
Timestables Answers
Q
Question
Answer
1
42 ÷ ☐ = 6
7
2
☐÷3=7
21
3
2×☐=8
4
4
☐÷8=8
64
5
3×8=☐
24
6
20 ÷ ☐ = 5
4
7
☐ × 9 = 45
5
8
☐ ÷ 4 = 10
40
9
☐ × 7 = 63
9
10
☐ × 9 = 90
10
Week 22 Session 2
Key Skills Answers
Q
Question
Answer
1
93 × 241 = ☐
22 413
2
11259 − 5825
5434
3
6.5 × 1.69
10.985
4
1.461 = ☐%
146.1
5
2.38 + 48.56
50.94
6
30 ÷ (−10)
−3
7
(−3) + (−3)
−6
8
Round 861 to 2 s.f.
860
9
What is the letter at (0,0)?
M
10
What is 1/5 of 15?
3
Week 22
Session 2
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 22 Session 3
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Week 22 Session 3
Mental Strategies Answers
Q
Question
Answer
1
5=1+☐
4
2
84 + ☐ = 100
16
3
Halve 3
1.5
4
86 − 10 = ☐
76
5
179 + ☐ = 180
1
6
76 = 16 + ☐
60
7
5458 − 5456 = ☐
2
8
2 × 6 = 12, so 12 ÷ 6 = ☐
2
9
What is 12:27 in 12 hour clock format?
10
From 2:35 am, how many minutes until 2:51
am?
12:27 pm
16
Week 22 Session 3
Timestables Answers
Q
Question
Answer
1
☐÷7=3
21
2
3×☐=9
3
3
☐÷2=6
12
4
80 ÷ 8 = ☐
10
5
21 ÷ ☐ = 7
3
6
4×9=☐
36
7
5 × ☐ = 10
2
8
8÷4=☐
2
9
9×5=☐
45
10
☐ × 9 = 90
10
Week 22 Session 3
Key Skills Answers
Q
Question
Answer
1
809 × 43 = ☐
34 787
2
1254 − 747
3
9.2 × 9.4
4
20% as a fraction
5
88.17 + 4.9
93.07
6
(−54) ÷ (−9)
6
7
6 + (−3)
3
8
Round 0.000069 to 1 s.f.
9
What is the letter at (−1,0)?
L
10
What is 1/6 of 30?
5
507
86.48
20/100 or (1/5)
0.00007
Week 22
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 22 Session 4
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Week 22 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=2+☐
3
2
☐ + 81 = 100
19
3
What is half of 5?
2.5
4
83 − 10 = ☐
73
5
173 + ☐ = 180
7
6
106 = 70 + ☐
36
7
469 − 465 = ☐
4
8
6 × 9 = 54, so 54 ÷ 9 = ☐
6
9
What is 11:27 am in 24 hour clock format?
10
4:30 pm is how many minutes after 3:46
pm?
11:27
44
Week 22 Session 4
Timestables Answers
Q
Question
Answer
1
7 × ☐ = 63
9
2
☐÷3=2
6
3
10 ÷ 2 = ☐
5
4
☐÷8=6
48
5
3 × ☐ = 15
5
6
32 ÷ 4 = ☐
8
7
5 × ☐ = 10
2
8
4×6=☐
24
9
☐÷9=6
54
10
80 ÷ ☐ = 8
10
Week 22 Session 4
Key Skills Answers
Q
Question
Answer
1
50 × 294 = ☐
14 700
2
1585 − 856
729
3
6.45 × 0.4
2.58
4
1.707 = ☐%
170.7
5
50.86 + 4.93
55.79
6
(−10) ÷ 5
−2
7
(−3) + (−6)
−9
8
Round 3909 to 3 s.f.
9
What is the letter at (1,−1)?
T
10
What is 6/10 of 30?
18
3910
Week 22
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 22 Session 5
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Week 22 Session 5
Mental Strategies Answers
Q
Question
Answer
1
5=2+☐
3
2
☐ + 95 = 100
5
3
What is half of 1?
0.5
4
59 − 10 = ☐
49
5
145 + ☐ = 150
5
6
113 = 70 + ☐
43
7
540 − 538 = ☐
2
8
2 × 3 = 6, so 6 ÷ 3 = ☐
2
9
What is 02:19 in 12 hour clock format?
10
9:41 pm is how many minutes after 9:28
pm?
2:19 am
13
Week 22 Session 5
Timestables Answers
Q
Question
Answer
1
49 ÷ ☐ = 7
7
2
18 ÷ 3 = ☐
6
3
14 ÷ 2 = ☐
7
4
☐÷8=3
24
5
27 ÷ 3 = ☐
9
6
4×9=☐
36
7
5 × ☐ = 15
3
8
☐÷4=4
16
9
☐ × 8 = 72
9
10
10 × ☐ = 100
10
Week 22 Session 5
Key Skills Answers
Q
Question
Answer
1
178 × 38 = ☐
6764
2
1997 − 999
998
3
1.71 × 8.5
14.535
4
1.17 = ☐%
117
5
15 + 3.11
18.11
6
70 ÷ (−7)
−10
7
(−8) + (−8)
−16
8
Round 7032 to 1 s.f.
7000
9
What is the letter at (0,−1)?
S
10
What is 2/4 of 28?
14
Week 22
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 23 Session 1
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Week 23 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐ + 7 = 10
3
2
20 = ☐ + 12
8
3
What is double 1?
2
4
Double 65
130
5
Halve 89
44.5
6
136 + 20 = ☐
156
7
80 + 79 = ☐
159
8
48 + 11 = 48 + 2 + ☐
9
6 + 150 = ☐
10
95 + 93 = 95 + 90 + ☐
9
156
3
Week 23 Session 1
Timestables Answers
Q
Question
Answer
1
12 ÷ 3 = ☐
4
2
☐÷2=3
6
3
10 × 8 = ☐
80
4
☐ × 10 = 30
3
5
☐÷4=8
32
6
18 ÷ 2 = ☐
9
7
10 × ☐ = 30
3
8
12 ÷ ☐ = 6
2
9
45 ÷ 5 = ☐
9
10
18 ÷ ☐ = 6
3
Week 23 Session 1
Key Skills Answers
Q
Question
Answer
1
372 ÷ 4 = ☐
93
2
15 ÷ 5 − 3
0
3
255.6 ÷ 6
42.6
4
100 × 1.19
119
5
84 − 4.6
79.4
6
If a = 1, b = 5 and c = 4, what is the value of
4b³ ?
500
7
(−7) − (−9)
8
Is 9 a factor of 29?
No
9
What is the positive square root of 121?
11
10
What is 50% of £340?
2
£170
Week 23
Session 1
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 23 Session 2
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Week 23 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 1 = 10
9
2
20 = 16 + ☐
4
3
What is double 3?
6
4
What is double 70?
35
5
What is half of 25?
12.5
6
186 + 20 = ☐
206
7
61 + 59 = ☐
120
8
19 + 7 = 19 + 1 + ☐
9
6 + 486 = ☐
10
68 + 89 = 68 + 80 + ☐
6
492
9
Week 23 Session 2
Timestables Answers
Q
Question
Answer
1
3 × ☐ = 24
8
2
☐ × 5 = 10
2
3
10 × 3 = ☐
30
4
3 × ☐ = 12
4
5
16 ÷ 4 = ☐
4
6
2×6=☐
12
7
☐ ÷ 10 = 6
60
8
18 ÷ 2 = ☐
9
9
☐ ÷ 5 = 10
50
10
21 ÷ 3 = ☐
7
Week 23 Session 2
Key Skills Answers
Q
Question
Answer
1
54 ÷ 3 = ☐
18
2
16 ÷ 4 − 1
3
3
8.9 ÷ 0.2
44.5
4
1000 × 32.987
5
93.96 − 89.3
6
If a = 5, b = 6 and c = 10, what is the value
of 2ab − c ?
50
7
(−4) − (−10)
6
8
List all the factors of 35
9
What is the value of (−1) squared?
10
What is 70% of £60?
32987
4.66
1, 5, 7, 35
1
£42
Week 23
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 23 Session 3
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Week 23 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 3
7
2
☐ + 19 = 20
1
3
What is double 2?
4
4
Double 55
110
5
What is half of 94?
47
6
124 + 60 = ☐
184
7
51 + 49 = ☐
100
8
1 + 10 = 1 + 9 + ☐
9
4 + 777 = ☐
10
53 + 14 = 53 + 10 + ☐
1
781
4
Week 23 Session 3
Timestables Answers
Q
Question
Answer
1
3×7=☐
21
2
8÷☐=4
2
3
☐ × 3 = 30
10
4
☐×3=9
3
5
4×5=☐
20
6
8÷2=☐
4
7
80 ÷ ☐ = 8
10
8
☐×4=8
2
9
30 ÷ 5 = ☐
6
10
☐ × 4 = 12
3
Week 23 Session 3
Key Skills Answers
Q
Question
Answer
1
112 ÷ 4 = ☐
28
2
4÷4−1
0
3
24.58 ÷ 0.5
49.16
4
100 × 0.63
63
5
20 − 1.54
18.46
6
If a = 8, b = 4 and c = 1, what is the value of
3a − b² ?
8
7
(−9) − (−3)
−6
8
List all the factors of 5
1, 5
9
What is the positive square root of 64?
10
What is 35% of £190?
8
£66.50
Week 23
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 23 Session 4
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Week 23 Session 4
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 5
5
2
2 + ☐ = 20
18
3
Double 8
16
4
Double 53
106
5
What is half of 97?
48.5
6
150 + 50 = ☐
200
7
46 + 49 = ☐
95
8
35 + 11 = 35 + 5 + ☐
6
9
3 + 570 = ☐
573
10
75 + 87 = 70 + 80 + ☐
12
Week 23 Session 4
Timestables Answers
Q
Question
Answer
1
☐ × 6 = 18
3
2
☐ × 7 = 14
2
3
70 ÷ ☐ = 7
10
4
3 × ☐ = 24
8
5
4×6=☐
24
6
☐ ÷ 2 = 10
20
7
10 × 5 = ☐
50
8
2 × ☐ = 10
5
9
5 × ☐ = 45
9
10
15 ÷ ☐ = 5
3
Week 23 Session 4
Key Skills Answers
Q
Question
Answer
1
63 ÷ 3 = ☐
21
2
9+2÷2
10
3
8.12 ÷ 0.1
81.2
4
82.369 × 100
5
96 − 3.1
6
If a = 5, b = 5 and c = 10, what is the value
of ac / 2b ?
5
7
(−9) − (−2)
−7
8
Is 12 a factor of 29?
No
9
What is the positive value of √144?
12
10
What is 100% of £70?
£70
8236.9
92.9
Week 23
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 23 Session 5
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Week 23 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 7 = 10
3
2
20 = 18 + ☐
2
3
What is double 6?
12
4
Double 29
58
5
What is half of 96?
48
6
160 + 50 = ☐
210
7
53 + 51 = ☐
104
8
18 + 6 = 18 + 2 + ☐
9
6 + 747 = ☐
10
92 + 22 = 92 + 20 + ☐
4
753
2
Week 23 Session 5
Timestables Answers
Q
Question
Answer
1
30 ÷ 3 = ☐
10
2
☐ × 7 = 14
2
3
☐ ÷ 10 = 5
50
4
24 ÷ 3 = ☐
8
5
☐÷4=6
24
6
2 × ☐ = 18
9
7
10 × 8 = ☐
80
8
2 × ☐ = 16
8
9
5 × ☐ = 30
6
10
3×8=☐
24
Week 23 Session 5
Key Skills Answers
Q
Question
Answer
1
77 ÷ 7 = ☐
11
2
1+8×3
25
3
66.4 ÷ 8
8.3
4
10 × 0.59
5.9
5
84.9 − 83.41
1.49
6
If a = 5, b = 4 and c = 3, what is the value of
5a − bc ?
13
7
3 − (−5)
8
8
Is 1 a factor of 2?
9
What is the positive square root of 16?
10
What is 40% of £50?
Yes
4
£20
Week 23
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 24 Session 1
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Week 24 Session 1
Mental Strategies Answers
Q
Question
Answer
1
5 + ☐ = 20
15
2
100 = 74 + ☐
36
3
Double 4
8
4
Double 61
122
5
90 + 10 = ☐
100
6
22 − 10 = ☐
12
7
4=2+☐
2
8
27 − 9 = 27 − 7 − ☐
2
9
9+9+9=☐×9
3
10
Draw hands on the clock face showing
10:40 am
See above
Week 24 Session 1
Timestables Answers
Q
Question
Answer
1
6×9=☐
54
2
☐÷4=4
16
3
☐÷8=6
48
4
☐÷2=3
6
5
36 ÷ 4 = ☐
9
6
8×4=☐
32
7
8×8=☐
64
8
☐ × 5 = 20
4
9
2×8=☐
16
10
☐÷8=5
40
Week 24 Session 1
Key Skills Answers
Q
Question
Answer
1
591 + 823
1414
2
(3 + 87) ÷ 9
3
Write Six Million, Nine Hundred and Ninety
Four Thousand and Forty Eight in digits
4
0.3 ÷ 10
0.03
5
(−1) × 2
−2
6
Difference between 10 and −10
20
7
Value of the dot
8
8
Is 32 a multiple of 6?
No
9
What is the value of 5 cubed?
125
10
4/5 = 32/☐
40
10
6 994 048
Week 24
Session 1
Calculate your
Ninja Score to see
which Ninja Belt
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Week 24 Session 2
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Week 24 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 1 = 20
19
2
39 + ☐ = 100
61
3
What is double 6?
12
4
What is double 54?
108
5
196 + 10 = ☐
206
6
69 − 10 = ☐
59
7
9=7+☐
2
8
39 − 12 = 39 − 9 − ☐
3
9
☐×3=3+3+3+3
4
10
What time is shown on the clock?
8:40 pm
Week 24 Session 2
Timestables Answers
Q
Question
Answer
1
6 × ☐ = 36
6
2
4×3=☐
12
3
☐ × 6 = 48
8
4
2×☐=8
4
5
☐÷4=6
24
6
8 × 10 = ☐
80
7
8 × ☐ = 16
2
8
4×3=☐
12
9
16 ÷ 2 = ☐
8
10
40 ÷ 8 = ☐
5
Week 24 Session 2
Key Skills Answers
Q
Question
Answer
1
589 + 9131
9720
2
4² + 3 × 3
3
Write 4976671 in words. Use the opposite page
for your answer.
4
6.7 ÷ 10
5
(−2) × (−6)
12
6
Difference between −9 and −5
4
7
Value of the dot
45
8
What is the lowest common multiple of 5 and 8?
40
9
What is the value of (−5) cubed?
10
7/8 = 14/☐
25
Four million, nine hundred and
seventy six thousand, six
hundred and seventy one
0.67
−125
16
Week 24
Session 2
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Ninja Score to see
which Ninja Belt
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Week 24 Session 3
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Week 24 Session 3
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 7
13
2
☐ + 41 = 100
59
3
What is double 9?
18
4
Double 82
164
5
154 + 10 = ☐
164
6
177 − 90 = ☐
87
7
4=3+☐
1
8
82 − 6 = 82 − 2 − ☐
4
9
☐×7=7+7+7+7
4
10
Draw hands on the clock face showing
12:05 pm
See above
Week 24 Session 3
Timestables Answers
Q
Question
Answer
1
☐ × 4 = 24
6
2
28 ÷ ☐ = 7
4
3
8 × ☐ = 48
6
4
2 × ☐ = 14
7
5
8÷☐=2
4
6
☐ × 6 = 48
8
7
40 ÷ 8 = ☐
5
8
4×7=☐
28
9
☐×4=8
2
10
☐÷8=9
72
Week 24 Session 3
Key Skills Answers
Q
Question
Answer
1
578 + 6771
7349
2
(1 + 29) ÷ 6
5
3
Write 339447 in words. Use the opposite
page for your answer.
4
0.75 ÷ 100
5
7 × (−10)
−70
6
8 − 10
−2
7
Value of the dot
55
8
Is 4 a multiple of 3?
No
9
What is the value of ∛64?
4
10
10/8 = 90/☐
72
Three hundred and thirty nine
thousand, four hundred and
forty seven
0.0075
Week 24
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 24 Session 4
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Week 24 Session 4
Mental Strategies Answers
Q
Question
Answer
1
18 + ☐ = 20
2
2
15 + ☐ = 100
85
3
What is double 2?
4
4
Double 27
54
5
57 + 10 = ☐
67
6
61 − 40 = ☐
21
7
9=5+☐
4
8
51 − 8 = 51 − 1 − ☐
7
9
5+5+5=☐×5
3
10
What time is shown on the clock?
2:15 pm
Week 24 Session 4
Timestables Answers
Q
Question
Answer
1
6×6=☐
36
2
4×4=☐
16
3
8 × ☐ = 64
8
4
16 ÷ 2 = ☐
8
5
12 ÷ 4 = ☐
3
6
8×5=☐
40
7
☐ × 8 = 64
8
8
4×3=☐
12
9
☐ × 5 = 10
2
10
8 × 10 = ☐
80
Week 24 Session 4
Key Skills Answers
Q
Question
Answer
1
965 + 8748
9713
2
(3 + 97) ÷ 10
3
Write 6898426 in words. Use the opposite
page for your answer.
4
699.34 ÷ 1000
5
(−8) × (−7)
56
6
Difference between −10 and 5
15
7
Value of the dot
6
8
Is 12 a multiple of 6?
9
What is the cube root of 8?
2
10
3/8 = 21/☐
56
10
Six million, eight hundred and
ninety eight thousand, four
hundred and twenty six
0.69934
Yes
Week 24
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 24 Session 5
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Week 24 Session 5
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 2
18
2
100 = ☐ + 45
55
3
What is double 5?
10
4
What is double 83?
166
5
197 + 10 = ☐
207
6
135 − 80 = ☐
55
7
6=5+☐
1
8
87 − 15 = 87 − 7 − ☐
8
9
☐×3=3+3+3
2
10
Draw hands on the clock face showing 11:00
am
See above
Week 24 Session 5
Timestables Answers
Q
Question
Answer
1
☐÷6=6
36
2
☐ × 3 = 12
4
3
48 ÷ 8 = ☐
6
4
☐ × 7 = 14
2
5
4×6=☐
24
6
☐÷8=6
48
7
☐ × 5 = 40
8
8
☐ × 5 = 20
4
9
18 ÷ 2 = ☐
9
10
☐÷8=3
24
Week 24 Session 5
Key Skills Answers
Q
Question
Answer
1
585 + 1228
1813
2
(5 + 9) × 2
28
3
Write Two Thousand, One Hundred and
Ninety Seven in digits
4
60.79 ÷ 1000
5
(−1) × (−5)
5
6
Which is the highest number, −8 or −2?
−2
7
Value of the dot
45
8
Is 24 a multiple of 6?
9
What is the value of ∛64?
4
10
8/10 = 72/☐
90
2197
0.06079
Yes
Week 24
Session 5
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 25 Session 1
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Week 25 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐+3=5
2
2
100 = ☐ + 38
62
3
What is half of 2?
1
4
119 − 10 = ☐
109
5
28 + ☐ = 30
2
6
114 = 64 + ☐
50
7
6057 − 6052 = ☐
5
8
2 × 8 = 16, so 16 ÷ 8 = ☐
2
9
What is 12:51 am in 24 hour clock format?
10
What time was it 21 minutes before 6:58
pm?
00:51
6:37 pm
Week 25 Session 1
Timestables Answers
Q
Question
Answer
1
☐÷4=3
12
2
18 ÷ ☐ = 6
3
3
32 ÷ ☐ = 8
4
4
9 × 10 = ☐
90
5
30 ÷ ☐ = 3
10
6
14 ÷ ☐ = 2
7
7
6×3=☐
18
8
7 × ☐ = 49
7
9
☐÷2=3
6
10
80 ÷ 10 = ☐
8
Week 25 Session 1
Key Skills Answers
Q
Question
1
71 × 79 = ☐
5609
2
691 − 391
300
3
9.9 × 7
69.3
4
0.105 as a fraction
5
21.96 + 8.42
30.38
6
Round 5.7345 to 3 decimal places
5.735
7
(−1) + (−1)
8
Round 6692 to 3 s.f.
9
What is the letter at (1,0)?
N
10
What is 3/10 of 90?
27
Answer
105/1000 (or 21/200)
−2
6700
Week 25
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 25 Session 2
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Week 25 Session 2
Mental Strategies Answers
Q
Question
Answer
1
2+☐=5
3
2
43 + ☐ = 100
57
3
Halve 2
1
4
47 − 10 = ☐
37
5
105 + ☐ = 110
5
6
49 = 30 + ☐
19
7
6984 − 6976 = ☐
8
8
1 × 7 = 7, so 7 ÷ 1 = ☐
7
9
What is 23:19 in 12 hour clock format?
11:19 pm
10
What time will it be 33 minutes after 5:37
am?
6:10 am
Week 25 Session 2
Timestables Answers
Q
Question
Answer
1
☐ × 5 = 20
4
2
21 ÷ ☐ = 7
3
3
☐÷4=5
20
4
☐÷9=9
81
5
10 × 10 = ☐
100
6
☐÷7=3
21
7
6×8=☐
48
8
☐÷7=9
63
9
2×☐=6
3
10
60 ÷ 10 = ☐
6
Week 25 Session 2
Key Skills Answers
Q
Question
Answer
1
938 × 61 = ☐
57 218
2
14966 − 7896
7070
3
5.9 × 4.8
28.32
4
0.3 as a fraction
3/10
5
76.65 + 4.4
72.25
6
Round 5.7773 to 2 decimal places
5.78
7
9 + (−6)
8
Round 6.0035 to 3 s.f.
9
What is the letter at (−1,0)?
L
10
What is 1/2 of 8?
4
3
6.00
Week 25
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 25 Session 3
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Week 25 Session 3
Mental Strategies Answers
Q
Question
Answer
1
5=☐+2
3
2
100 = ☐ + 65
35
3
What is half of 5?
2.5
4
164 − 10 = ☐
154
5
88 + ☐ = 90
2
6
50 = 10 + ☐
40
7
8069 − 8064 = ☐
5
8
5 × 9 = 45, so 45 ÷ 5 = ☐
9
9
What is 5:35 pm in 24 hour clock format?
17:35
10
What time was it 32 minutes before 5:37
pm?
5:05 pm
Week 25 Session 3
Timestables Answers
Q
Question
Answer
1
4×6=☐
24
2
3 × ☐ = 18
6
3
4×2=☐
8
4
☐÷9=6
54
5
10 × 10 = ☐
100
6
☐ × 6 = 42
7
7
54 ÷ ☐ = 9
6
8
63 ÷ 7 = ☐
9
9
2 × ☐ = 12
6
10
10 × ☐ = 40
4
Week 25 Session 3
Key Skills Answers
Q
Question
1
34 × 29 = ☐
986
2
12127 − 6812
5315
3
8.3 × 5
41.5
4
45.2% as a decimal number
0.452
5
8 + 7.96
15.96
6
Round 1.0374 to 1 decimal place
1.0
7
(−3) + (−9)
−12
8
Round 0.06349 to 3 s.f.
9
What is the letter at (−1,1)?
G
10
What is 2/3 of 33?
22
Answer
0.0635
Week 25
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 25 Session 4
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Week 25 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=4+☐
1
2
100 = 55 + ☐
45
3
What is half of 9?
4.5
4
165 − 10 = ☐
155
5
5 + ☐ = 10
5
6
130 = 50 + ☐
80
7
621 − 613 = ☐
8
8
3 × 4 = 12, so 12 ÷ 4 = ☐
3
9
What is 21:06 in 12 hour clock format?
10
From 09:08, how many minutes until 09:28?
9:06 pm
20
Week 25 Session 4
Timestables Answers
Q
Question
Answer
1
☐÷4=7
28
2
9÷3=☐
3
3
☐÷4=4
16
4
☐ ÷ 9 = 10
90
5
10 × 9 = ☐
90
6
21 ÷ 7 = ☐
3
7
☐÷6=9
54
8
☐÷7=5
35
9
☐÷2=6
12
10
☐ ÷ 10 = 4
40
Week 25 Session 4
Key Skills Answers
Q
Question
Answer
1
714 × 31 = ☐
22 134
2
13427 − 8216
5211
3
7.2 × 7.8
56.16
4
0.598 = ☐%
59.8
5
7.92 + 35.47
43.39
6
Round 0.551 to 1 decimal place
7
1 + (−1)
8
Round 7279 to 1 s.f.
9
What is the letter at (0,−2)?
X
10
What is 2/10 of 90?
18
0.6
0
7000
Week 25
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 25 Session 5
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Week 25 Session 5
Mental Strategies Answers
Q
Question
Answer
1
5=3+☐
2
2
☐ + 57 = 100
43
3
What is half of 7?
3.5
4
88 − 10 = ☐
78
5
189 + ☐ = 190
1
6
104 = 70 + ☐
34
7
635 − 632 = ☐
3
8
7 × 3 = 21, so 21 ÷ 7 = ☐
3
9
What is 9:21 am in 24 hour clock format?
10
From 1:39 pm, how many minutes until 1:57
pm?
09:21
18
Week 25 Session 5
Timestables Answers
Q
Question
Answer
1
20 ÷ 4 = ☐
5
2
3 × ☐ = 15
5
3
4×2=☐
8
4
45 ÷ 9 = ☐
5
5
10 × 8 = ☐
80
6
28 ÷ 7 = ☐
4
7
☐ × 10 = 60
6
8
56 ÷ 7 = ☐
8
9
☐÷2=8
16
10
☐ × 10 = 100
10
Week 25 Session 5
Key Skills Answers
Q
Question
1
45 × 34 = ☐
1530
2
19966 − 9998
9968
3
5.7 × 5.32
30.324
4
169.3% as a decimal number
1.693
5
7.33 + 81.17
88.5
6
Round 65.7352 to 3 decimal places
7
(−10) + (−1)
−11
8
Round 8.6822 to 3 s.f.
8.68
9
What is the letter at (1,0)?
N
10
What is 1/3 of 18?
6
Answer
65.735
Week 25
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 26 Session 1
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Week 26 Session 1
Mental Strategies Answers
Q
Question
Answer
1
8 + ☐ = 10
2
2
Double 4
8
3
Halve 8
4
4
What is half of 36?
18
5
31 + 10 = ☐
41
6
69 + 50 = ☐
119
7
33 + 31 = ☐
64
8
81 + 16 = 81 + 9 + ☐
7
9
3 + 699 = ☐
10
54 + 14 = 50 + 10 + ☐
702
8
Week 26 Session 1
Timestables Answers
Q
Question
Answer
1
16 ÷ ☐ = 8
2
2
20 ÷ ☐ = 4
5
3
☐ × 4 = 36
9
4
4 × ☐ = 16
4
5
☐÷9=6
54
6
5×3=☐
15
7
50 ÷ 5 = ☐
10
8
2 × ☐ = 20
10
9
9 × ☐ = 18
2
10
☐×2=4
2
Week 26 Session 1
Key Skills Answers
Q
Question
1
156 ÷ 4 = ☐
39
2
2÷1−1
1
3
0.88 ÷ 0.1
0.088
4
100 × 1.48
148
5
28 − 6.92
21.08
6
If a = 5 b = 3 and c = 2, what is the value of
2abc − c² ?
56
7
5 − (−3)
8
8
List all the factors of 38
9
What is the value of 8 squared?
10
What is 125% of £10?
Answer
1, 2, 19, 38
64
£12.50
Week 26
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 26 Session 2
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Week 26 Session 2
Mental Strategies Answers
Q
Question
Answer
1
10 = 2 + ☐
8
2
What is double 5?
10
3
What is half of 6?
3
4
What is half of 54?
27
5
103 + 10 = ☐
113
6
132 + 70 = ☐
202
7
34 + 37 = ☐
71
8
69 + 5 = 69 + 1 + ☐
4
9
8 + 706 = ☐
10
63 + 16 = 63 + 10 + ☐
714
6
Week 26 Session 2
Timestables Answers
Q
Question
Answer
1
☐÷2=8
16
2
☐ × 5 = 25
5
3
9 × ☐ = 18
2
4
36 ÷ 4 = ☐
9
5
☐ × 3 = 27
9
6
☐÷5=2
10
7
5×7=☐
35
8
☐×2=4
2
9
☐÷9=7
63
10
20 ÷ 2 = ☐
10
Week 26 Session 2
Key Skills Answers
Q
Question
1
114 ÷ 3 = ☐
38
2
9+5×2
19
3
17 ÷ 5
3.4
4
49.172 × 10
491.72
5
54 − 4.11
49.89
6
If a = 4 b = 6 and c = 8, what is the value of
bc / a ?
12
7
(−4) − (−2)
−2
8
Is 2 a factor of 17?
No
9
What is the positive square root of 100?
10
10
What is 130% of £380?
494
Answer
Week 26
Session 2
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Ninja Score to see
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you’ve earned
today!
Week 26 Session 3
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Week 26 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = 5 + ☐
5
2
Double 4
8
3
What is half of 8?
4
4
Halve 34
17
5
64 + 10 = ☐
74
6
98 + 50 = ☐
148
7
48 + 46 = ☐
94
8
6 + 13 = 6 + 4 + ☐
9
9
2 + 786 = ☐
788
10
37 + 44 = 30 + 40 + ☐
11
Week 26 Session 3
Timestables Answers
Q
Question
Answer
1
☐ × 9 = 18
2
2
5 × ☐ = 35
7
3
☐ × 2 = 18
9
4
40 ÷ 4 = ☐
10
5
☐ × 6 = 54
9
6
☐ × 7 = 35
5
7
5 × ☐ = 45
9
8
☐ × 7 = 14
2
9
72 ÷ ☐ = 8
9
10
2 × ☐ = 10
5
Week 26 Session 3
Key Skills Answers
Q
Question
1
640 ÷ 8 = ☐
80
2
4÷2+5
7
3
17.48 ÷ 4
4.37
4
100 × 85.923
8592.3
5
34 − 1.07
32.93
6
If a = 7 b = 5 and c = 3, what is the value of
3b² ?
75
7
(−7) − (−7)
0
8
List all the factors of 40
1, 2, 4, 5, 8, 10, 20, 40
9
What is the value of 9²?
81
10
What is 95% of £60?
57
Answer
Week 26
Session 3
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Ninja Score to see
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you’ve earned
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Week 26 Session 4
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Week 26 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 1 = 10
9
2
What is double 9?
18
3
Halve 7
3.5
4
Halve 49
24.5
5
68 + 10 = ☐
78
6
65 + 70 = ☐
135
7
39 + 42 = ☐
81
8
69 + 2 = 69 + 1 + ☐
1
9
6 + 814 = ☐
10
86 + 88 = 86 + 80 + ☐
820
8
Week 26 Session 4
Timestables Answers
Q
Question
Answer
1
☐÷2=7
14
2
☐ × 4 = 20
5
3
9 × ☐ = 45
5
4
4×3=☐
12
5
18 ÷ ☐ = 2
9
6
5 × ☐ = 50
10
7
☐÷5=9
45
8
8÷2=☐
4
9
63 ÷ ☐ = 7
9
10
12 ÷ ☐ = 6
2
Week 26 Session 4
Key Skills Answers
Q
Question
Answer
1
99 ÷ 9 = ☐
11
2
76 − 8 × 2
60
3
7.84 ÷ 0.1
78.4
4
0.57 × 1000
570
5
91.7 − 80.92
10.78
6
If a = 6 b = 10 and c = 1, what is the value of
√(a + b) ?
4
7
(−10) − (−1)
−9
8
What is the highest common factor of 21 and 14?
9
What is the value of 13²?
169
10
What is 10% of £370?
£37
7
Week 26
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 26 Session 5
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Week 26 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 6 = 10
4
2
What is double 5?
10
3
Halve 9
4.5
4
What is half of 65?
32.5
5
131 + 10 = ☐
141
6
32 + 10 = ☐
42
7
44 + 47 = ☐
91
8
61 + 13 = 61 + 9 + ☐
4
9
7 + 411 = ☐
10
82 + 72 = 80 + 70 + ☐
418
4
Week 26 Session 5
Timestables Answers
Q
Question
Answer
1
2 × ☐ = 14
7
2
☐÷5=9
45
3
36 ÷ ☐ = 4
9
4
4 × ☐ = 36
9
5
9 × ☐ = 81
9
6
☐ × 8 = 40
5
7
5×6=☐
30
8
2 × ☐ = 20
10
9
36 ÷ 9 = ☐
4
10
2×5=☐
10
Week 26 Session 5
Key Skills Answers
Q
Question
1
132 ÷ 2 = ☐
66
2
8−4÷2
6
3
45.64 ÷ 7
6.52
4
42.573 × 1000
42573
5
75.15 − 49.99
25.16
6
If a = 8 b = 4 and c = 1, what is the value of
3a − b² ?
8
7
(−5) − (−1)
−4
8
List all the factors of 28
9
What is the value of 11 squared?
10
What is 25% of £170?
Answer
1, 2, 4, 7, 14, 28
121
£42.50
Week 26
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 27 Session 1
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Week 27 Session 1
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 10
10
2
Double 50
100
3
What is half of 95?
47.5
4
132 + 10 = ☐
142
5
76 − 10 = ☐
66
6
75 − 20 = ☐
55
7
5=3+☐
2
8
42 − 8 = 42 − 2 − ☐
6
9
☐×9=9+9+9+9
4
10
What time is shown on the clock?
9:00 am
Week 27 Session 1
Timestables Answers
Q
Question
Answer
1
90 ÷ 9 = ☐
10
2
3×8=☐
24
3
8 × ☐ = 16
2
4
20 ÷ 5 = ☐
4
5
24 ÷ ☐ = 8
3
6
☐ × 10 = 30
3
7
☐÷2=5
10
8
5 × ☐ = 20
4
9
☐ ÷ 10 = 7
70
10
80 ÷ ☐ = 8
10
Week 27 Session 1
Key Skills Answers
Q
Question
Answer
1
906 + 9228
10 134
2
(84 − 3) ÷ 9
9
3
Write 24802938 in words. Use the opposite page
for your answer.
4
0.1 ÷ 100
5
Simplify 8/10
6
Difference between −3 and −2
1
7
Value of the dot
2
8
What is the lowest common multiple of 7 and 8?
56
9
What is the value of 4³?
64
10
10/3 = ☐/6
20
Twenty four million, eight
hundred and two thousand,
nine hundred and thirty eight
0.001
4/5
Week 27
Session 1
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 27 Session 2
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Week 27 Session 2
Mental Strategies Answers
Q
Question
Answer
1
20 = 3 + ☐
17
2
Double 77
154
3
What is half of 15?
7.5
4
20 + 10 = ☐
30
5
156 − 10 = ☐
146
6
63 − 60 = ☐
3
7
8=7+☐
1
8
27 − 15 = 27 − 7 − ☐
8
9
9+9+9+9=☐×9
4
10
Draw hands on the clock face showing 1:40
pm
See above
Week 27 Session 2
Timestables Answers
Q
Question
Answer
1
36 ÷ ☐ = 4
9
2
3×2=☐
6
3
☐÷8=8
64
4
50 ÷ ☐ = 10
5
5
12 ÷ 3 = ☐
4
6
☐ × 4 = 12
3
7
☐ × 6 = 12
2
8
50 ÷ ☐ = 10
5
9
80 ÷ ☐ = 8
10
10
70 ÷ 10 = ☐
7
Week 27 Session 2
Key Skills Answers
Q
Question
1
2314 + 1009
3323
2
(1 + 10) × 5
55
3
Write 12477649 in words. Use the opposite
page for your answer.
4
422.7 ÷ 10
5
Simplify 10/16
5/8
6
Which is the highest number, −5 or −4?
−4
7
Value of the dot
5
8
Is 34 a multiple of 8?
9
What is the cube root of 125?
5
10
6/9 = 30/☐
45
Answer
Twelve million, four hundred
and seventy seven thousand,
six hundred and forty nine
42.27
No
Week 27
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 27 Session 3
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Week 27 Session 3
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 14
6
2
Double 36
72
3
Halve 90
45
4
162 + 10 = ☐
172
5
83 − 10 = ☐
73
6
109 − 70 = ☐
39
7
6=3+☐
3
8
47 − 9 = 47 − 7 − ☐
2
9
☐×6=6+6+6+6+6
5
10
Draw hands on the clock face showing 4:20
pm
See above
Week 27 Session 3
Timestables Answers
Q
Question
Answer
1
18 ÷ 9 = ☐
2
2
3×4=☐
12
3
48 ÷ 8 = ☐
6
4
5 × ☐ = 35
7
5
3 × ☐ = 21
7
6
3×8=☐
24
7
10 ÷ ☐ = 5
2
8
5×8=☐
40
9
60 ÷ ☐ = 6
10
10
30 ÷ ☐ = 3
10
Week 27 Session 3
Key Skills Answers
Q
Question
Answer
1
9200 + 9803
19 003
2
√16 + 20 ÷ 5
8
3
Write Thirty Five Thousand, Three Hundred
and Thirty Two in digits
35 332
4
0.19 ÷ 1000
0.00019
5
Simplify 16/28
4/7
6
9 − 10
−1
7
Value of the dot
9
8
What is the lowest common multiple of 7 and 8?
9
What is the value of ∛64?
4
10
9/2 = ☐/6
27
56
Week 27
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 27 Session 4
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Week 27 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 10 = 20
10
2
Double 31
62
3
What is half of 21?
10.5
4
166 + 10 = ☐
176
5
114 − 10 = ☐
104
6
169 − 90 = ☐
79
7
3=1+☐
2
8
24 − 9 = 24 − 4 − ☐
5
9
☐×3=3+3+3+3+3
5
10
Draw hands on the clock face showing 5:15
pm
See above
Week 27 Session 4
Timestables Answers
Q
Question
Answer
1
☐ ÷ 9 = 10
90
2
3 × 10 = ☐
30
3
☐÷8=5
40
4
5×8=☐
40
5
☐÷3=3
9
6
3×7=☐
21
7
☐ × 6 = 12
2
8
5 × ☐ = 25
5
9
10 × 5 = ☐
50
10
☐ × 9 = 90
10
Week 27 Session 4
Key Skills Answers
Q
Question
Answer
1
546 + 4446
4992
2
1² + 1 × 4
3
Write Six Hundred and Ten Thousand, Eight
Hundred and Thirty in digits
4
9251 ÷ 10
5
Write 6/24 in its simplest form
1/4
6
Difference between −7 and 7
14
7
Value of the dot
3
8
List the first 4 multiples of 12
9
What is the value of (−10) cubed?
10
3/2 = ☐/4
5
610 830
925.1
12, 24, 36, 48
−1000
6
Week 27
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 27 Session 5
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Week 27 Session 5
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 10
10
2
Double 50
100
3
What is half of 99?
49.5
4
170 + 10 = ☐
180
5
15 − 10 = ☐
5
6
128 − 80 = ☐
48
7
7=4+☐
3
8
11 − 6 = 11 − 1 − ☐
5
9
☐×9=9+9
2
10
Draw hands on the clock face showing 2:25
am
See above
Week 27 Session 5
Timestables Answers
Q
Question
Answer
1
9 × ☐ = 45
5
2
☐ × 7 = 21
3
3
☐ × 6 = 48
8
4
10 ÷ ☐ = 2
5
5
☐÷3=5
15
6
☐ × 9 = 27
3
7
2 × ☐ = 14
7
8
15 ÷ 5 = ☐
3
9
10 × ☐ = 40
4
10
☐ × 6 = 60
10
Week 27 Session 5
Key Skills Answers
Q
Question
Answer
1
879 + 6515
7394
2
(8 + 3) × 4
44
3
Write Forty Four Million, Twenty Eight Thousand, Three
Hundred and Seventy Eight in digits
4
489.347 ÷ 1000
5
Write 8/16 in its simplest form
1/2
6
(−8) − 8
−16
7
Value of the dot
65
8
List the first 4 multiples of 11
11, 22, 33, 44
9
What is the cube root of 27?
3
10
8/10 = 64/☐
80
44 028 378
0.489347
Week 27
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 28 Session 1
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Week 28 Session 1
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
☐ + 32 = 100
68
3
What is half of 3?
1.5
4
23 − 10 = ☐
13
5
139 + ☐ = 140
1
6
52 = 42 + ☐
10
7
438 − 432 = ☐
6
8
4 × 7 = 28, so 28 ÷ 7 = ☐
4
9
What is 13:57 in 12 hour clock format?
1:57 pm
10
What time will it be 51 minutes after 7:13 pm
8:04 pm
Week 28 Session 1
Timestables Answers
Q
Question
Answer
1
6×4=☐
24
2
18 ÷ 9 = ☐
2
3
☐ × 3 = 15
5
4
36 ÷ 6 = ☐
6
5
4 × ☐ = 24
6
6
8 × ☐ = 48
6
7
8×3=☐
24
8
24 ÷ ☐ = 6
4
9
5 × ☐ = 25
5
10
15 ÷ 5 = ☐
3
Week 28 Session 1
Key Skills Answers
Q
Question
1
45 × 70 = ☐
3150
2
1012 − 791
221
3
6.3 × 4.57
28.791
4
5/5 = ☐ %
100
5
(−2) × 4
−8
6
Round 8.1434 to 2 decimal places
8.14
7
8 + (−9)
−72
8
Round 1915 to 1 s.f.
2000
9
What is the letter at (0,−2)?
X
10
What is 5/6 of 42?
35
Answer
Week 28
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 28 Session 2
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Week 28 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=2+☐
3
2
100 = ☐ + 7
93
3
What is half of 2?
1
4
143 − 10 = ☐
5
11 + ☐ = 20
9
6
52 = 12 + ☐
40
7
8931 − 8924 = ☐
7
8
1 × 4 = 4, so 4 ÷ 4 = ☐
1
9
What is 1:13 pm in 24 hour clock format?
13:13
10
12:10 am is how many minutes after 11:45
pm?
25
133
Week 28 Session 2
Timestables Answers
Q
Question
Answer
1
6 × ☐ = 30
5
2
☐ × 10 = 90
9
3
5×5=☐
25
4
6×5=☐
30
5
☐÷4=6
24
6
☐ × 3 = 24
8
7
8 × ☐ = 80
10
8
☐ × 6 = 24
4
9
5 × ☐ = 30
6
10
☐ ÷ 5 = 10
50
Week 28 Session 2
Key Skills Answers
Q
Question
Answer
1
966 × 15 = ☐
14 490
2
1202 − 684
518
3
4.7 × 1.5
7.05
4
1.42 = ☐%
142
5
(−6) × 6
−36
6
Round 3.8213 to 1 decimal place
3.8
7
9 + (−2)
8
Round 0.006133 to 3 s.f.
9
What is the letter at (−2,−2)?
V
10
What is 3/8 of 80?
30
7
0.00613
Week 28
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 28 Session 3
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Week 28 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐+1=5
4
2
100 = 3 + ☐
97
3
Halve 7
3.5
4
140 − 10 = ☐
130
5
117 + ☐ = 120
3
6
170 = 80 + ☐
90
7
6075 − 6067 = ☐
8
8
8 × 6 = 48, so 48 ÷ 6 = ☐
8
9
What is 4:44 pm in 24 hour clock format?
16:44
10
6:59 am is how many minutes after 6:48
am?
11
Week 28 Session 3
Timestables Answers
Q
Question
Answer
1
18 ÷ 6 = ☐
3
2
54 ÷ ☐ = 6
9
3
5×7=☐
35
4
48 ÷ ☐ = 8
6
5
4×6=☐
24
6
☐ × 4 = 32
8
7
8 × 10 = ☐
80
8
4×9=☐
36
9
☐÷5=7
35
10
☐÷5=9
45
Week 28 Session 3
Key Skills Answers
Q
Question
1
546 × 12 = ☐
6552
2
1912 − 998
914
3
4 × 3.4
13.6
4
0.966 = ☐%
96.6
5
(−3) × 10
−30
6
Round 0.7092 to 1 decimal place
0.7
7
(−2) + (−8)
−10
8
Round 30.83 to 2 s.f.
31
9
What is the letter at (−1,0)?
L
10
What is 2/6 of 30?
10
Answer
Week 28
Session 3
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Ninja Score to see
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you’ve earned
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Week 28 Session 4
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Week 28 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=☐+4
1
2
☐ + 81 = 100
19
3
What is half of 3?
1.5
4
28 − 10 = ☐
18
5
93 + ☐ = 100
7
6
175 = 105 + ☐
70
7
2219 − 2212 = ☐
7
8
6 × 7 = 42, so 42 ÷ 7 = ☐
6
9
What is 2:28 am in 24 hour clock format?
10
From 8:29 pm, how many minutes until 9:24
pm?
02:28
55
Week 28 Session 4
Timestables Answers
Q
Question
Answer
1
30 ÷ ☐ = 5
6
2
9 × ☐ = 72
8
3
5 × ☐ = 25
5
4
60 ÷ 6 = ☐
10
5
16 ÷ ☐ = 4
4
6
24 ÷ ☐ = 3
8
7
16 ÷ ☐ = 2
8
8
20 ÷ 4 = ☐
5
9
40 ÷ ☐ = 8
5
10
40 ÷ 5 = ☐
8
Week 28 Session 4
Key Skills Answers
Q
Question
1
40 × 47 = ☐
1880
2
13043 − 7312
5731
3
9 × 3.47
31.23
4
2/4 = ☐ %
50
5
(−7) × 3
−21
6
Round 22.3996 to 3 decimal places
7
(−2) + (−1)
8
Round 6.3674 to 3 s.f.
9
What is the letter at (1,0)?
N
10
What is 8/10 of 80?
64
Answer
22.400
−3
6.37
Week 28
Session 4
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Ninja Score to see
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Week 28 Session 5
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Week 28 Session 5
Mental Strategies Answers
Q
Question
Answer
1
5=☐+2
3
2
100 = 19 + ☐
81
3
Halve 8
4
4
16 − 10 = ☐
6
5
12 + ☐ = 20
8
6
158 = 120 + ☐
38
7
292 − 285 = ☐
7
8
1 × 8 = 8, so 8 ÷ 1 = ☐
8
9
What is 22:40 in 12 hour clock format?
10
What time was it 59 minutes before 8:00
am?
10:40 pm
7:01 am
Week 28 Session 5
Timestables Answers
Q
Question
Answer
1
6×2=☐
12
2
9 × ☐ = 90
10
3
☐ × 9 = 45
5
4
6 × ☐ = 60
10
5
20 ÷ 4 = ☐
5
6
☐ × 4 = 32
8
7
8×8=☐
64
8
☐ × 7 = 28
4
9
5 × ☐ = 10
2
10
☐ × 4 = 20
5
Week 28 Session 5
Key Skills Answers
Q
Question
Answer
1
605 × 70 = ☐
42 350
2
9648 − 4846
4802
3
6.6 × 2.25
14.85
4
0.4 as a fraction
5
8 × (−10)
−80
6
Round 0.3823 to 2 decimal places
0.38
7
(−10) + (−10)
−20
8
Round 2683 to 2 s.f.
2700
9
What is the letter at (−2,−2)?
V
10
What is 3/9 of 45?
15
4/10 (or 2/5)
Week 28
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 29 Session 1
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Week 29 Session 1
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 1
9
2
What is double 8?
16
3
What is half of 51?
25.5
4
15 + 80 = ☐
95
5
133 − 60 = ☐
73
6
12 + ☐ = 20
8
7
68 + 70 = ☐
138
8
51 + 18 = 51 + 9 + ☐
9
1 + 871 = ☐
872
10
86 + 85 = 80 + 80 + ☐
11
9
Week 29 Session 1
Timestables Answers
Q
Question
Answer
1
21 ÷ ☐ = 7
3
2
☐ × 10 = 100
10
3
☐ ÷ 10 = 3
30
4
49 ÷ ☐ = 7
7
5
8×8=☐
64
6
☐÷6=4
24
7
45 ÷ ☐ = 5
9
8
6×6=☐
36
9
☐ × 6 = 54
9
10
90 ÷ 10 = ☐
9
Week 29 Session 1
Key Skills Answers
Q
Question
1
612 ÷ 9 = ☐
68
2
10 ÷ 2 + 4
9
3
40.32 ÷ 0.5
80.64
4
0.13 × 10
1.3
5
(−100) ÷ (−10)
10
6
If a = 5 b = 9 and c = 3, what is the value of
2a + b/c ?
13
7
5 − (−10)
15
8
What is the highest common factor of 27 and 19?
9
What is the value of (−12) squared?
144
10
What is 110% of £120?
£132
Answer
1
Week 29
Session 1
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Week 29 Session 2
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Week 29 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 6 = 10
4
2
Double 2
4
3
Halve 52
26
4
188 + 30 = ☐
218
5
115 − 70 = ☐
45
6
186 + ☐ = 190
4
7
68 + 70 = ☐
8
41 + 14 = 41 + 9 + ☐
9
9 + 529 = ☐
538
10
48 + 77 = 40 + 70 + ☐
15
138
5
Week 29 Session 2
Timestables Answers
Q
Question
Answer
1
3×☐=6
2
2
10 × 5 = ☐
50
3
10 × 3 = ☐
30
4
7 × ☐ = 14
2
5
40 ÷ ☐ = 5
8
6
☐÷6=8
48
7
18 ÷ ☐ = 2
9
8
☐ × 7 = 42
6
9
9 × 10 = ☐
90
10
40 ÷ ☐ = 4
10
Week 29 Session 2
Key Skills Answers
Q
Question
1
657 ÷ 9 = ☐
73
2
15 ÷ 3 + 2
7
3
136.29 ÷ 7
19.47
4
7.5 × 100
750
5
(−18) ÷ (−6)
3
6
If a = 1 b = 2 and c = 4, what is the value of
4b³ ?
32
7
(−8) − (−5)
−3
8
List all the factors of 20
9
What is the value of (−14) squared?
196
10
What is 70% of £330?
£231
Answer
1, 2, 4, 5, 10, 20
Week 29
Session 2
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Ninja Score to see
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Week 29 Session 3
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Week 29 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = 1 + ☐
9
2
Double 6
12
3
What is half of 80?
40
4
150 + 20 = ☐
170
5
78 − 50 = ☐
28
6
69 + ☐ = 70
1
7
98 + 97 = ☐
195
8
32 + 12 = 32 + 8 + ☐
9
1 + 147 = ☐
148
10
36 + 15 = 30 + 10 + ☐
11
4
Week 29 Session 3
Timestables Answers
Q
Question
Answer
1
27 ÷ ☐ = 9
3
2
10 × ☐ = 20
2
3
40 ÷ ☐ = 4
10
4
7 × ☐ = 42
6
5
☐ × 9 = 72
8
6
☐÷6=2
12
7
45 ÷ ☐ = 5
9
8
6 × ☐ = 48
8
9
63 ÷ 9 = ☐
7
10
100 ÷ ☐ = 10
10
Week 29 Session 3
Key Skills Answers
Q
Question
1
288 ÷ 9 = ☐
32
2
100 − 20 ÷ 5
96
3
67.32 ÷ 9
7.48
4
9.28 × 10
92.8
5
70 ÷ (−10)
−7
6
If a = 7 b = 10 and c = 9, what is the value of
c / (b − a) ?
3
7
(−2) − (−9)
7
8
What is the highest common factor of 21 and 28?
7
9
What is the value of 8²?
10
What is 65% of £370?
Answer
64
£240.50
Week 29
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 29 Session 4
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Week 29 Session 4
Mental Strategies Answers
Q
Question
Answer
1
1 + ☐ = 10
9
2
Double 2
4
3
Halve 13
26
4
31 + 30 = ☐
61
5
62 − 20 = ☐
42
6
85 + ☐ = 90
5
7
44 + 47 = ☐
91
8
83 + 13 = 83 + 7 + ☐
6
9
7 + 977 = ☐
10
29 + 37 = 29 + 30 + ☐
984
7
Week 29 Session 4
Timestables Answers
Q
Question
Answer
1
☐÷3=9
27
2
10 × ☐ = 30
3
3
10 × ☐ = 80
8
4
☐÷7=4
28
5
☐÷8=2
16
6
6×6=☐
36
7
9×7=☐
63
8
6×2=☐
12
9
9×4=☐
36
10
☐ × 8 = 80
10
Week 29 Session 4
Key Skills Answers
Q
Question
1
720 ÷ 9 = ☐
80
2
59 − 2 ÷ 1
57
3
131.6 ÷ 10
13.16
4
5.42 × 10
54.2
5
(−10) ÷ (−5)
2
6
If a = 5 b = 3 and c = 10, what is the value of
bc / a ?
6
7
7 − (−8)
15
8
List all the factors of 4
9
What is the value of 6²?
36
10
What is 115% of £160?
£184
Answer
1, 2, 4
Week 29
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 29 Session 5
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Week 29 Session 5
Mental Strategies Answers
Q
Question
Answer
1
10 = 9 + ☐
1
2
Double 5
10
3
What is half of 52?
26
4
43 + 20 = ☐
63
5
108 − 50 = ☐
58
6
174 + ☐ = 180
6
7
26 + 27 = ☐
53
8
23 + 9 = 23 + 7 + ☐
2
9
7 + 724 = ☐
10
82 + 61 = 82 + 60 + ☐
731
1
Week 29 Session 5
Timestables Answers
Q
Question
Answer
1
12 ÷ ☐ = 4
3
2
☐ ÷ 10 = 6
60
3
☐÷5=6
30
4
☐ × 10 = 70
7
5
8 × 10 = ☐
80
6
☐ × 5 = 30
6
7
63 ÷ 9 = ☐
7
8
☐ × 10 = 60
6
9
9×7=☐
63
10
90 ÷ ☐ = 9
10
Week 29 Session 5
Key Skills Answers
Q
Question
1
624 ÷ 8 = ☐
78
2
8 + 20 ÷ 5
12
3
37.66 ÷ 7
5.38
4
67.384 × 1000
5
(−16) ÷ 2
−8
6
If a = 4 b = 10 and c = 2, what is the value of
2abc − c² ?
156
7
4 − (−8)
12
8
List all the factors of 6
9
What is the value of (−7) squared?
49
10
What is 45% of £100?
£45
Answer
67 384
1, 2, 3, 6
Week 29
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 30 Session 1
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Week 30 Session 1
Mental Strategies Answers
Q
Question
Answer
1
20 = 11 + ☐
2
What is double 57?
114
3
198 + 10 = ☐
208
4
57 + 90 = ☐
147
5
35 − 30 = ☐
5
6
19 + 17 = ☐
36
7
3=2+☐
1
8
31 − 6 = 31 − 1 − ☐
5
9
☐×8=8+8
2
10
What time is shown on the clock?
9
2:00 am
Week 30 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 6 = 42
7
2
☐÷8=8
64
3
72 ÷ ☐ = 9
8
4
24 ÷ 8 = ☐
3
5
64 ÷ ☐ = 8
8
6
☐÷5=7
35
7
72 ÷ ☐ = 9
8
8
10 ÷ ☐ = 2
5
9
☐÷3=2
6
10
35 ÷ ☐ = 5
7
Week 30 Session 1
Key Skills Answers
Q
Question
Answer
1
9951 + 6530
16 481
2
(1 + 48) ÷ 7
7
3
Write 51923 in words. Use the opposite
page for your answer.
4
2.3 ÷ 10
0.23
5
Simplify 8/12
2/3
6
Which is the highest number, −10 or −3?
−3
7
Value of the dot
45
8
What is the lowest common multiple of 7 and 8?
56
9
What is the value of (−5) cubed?
10
5/9 = ☐/72
Fifty one thousand, nine
hundred and twenty three
−125
40
Week 30
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 30 Session 2
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Week 30 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 2 = 20
18
2
What is double 21?
42
3
65 + 10 = ☐
75
4
67 + 50 = ☐
117
5
126 − 80 = ☐
46
6
65 + 68 = ☐
133
7
7=2+☐
5
8
11 − 10 = 11 − 1 − ☐
9
9
☐×3=3+3+3+3
4
10
Draw hands on the clock face showing 2:30
am
See above
Week 30 Session 2
Timestables Answers
Q
Question
Answer
1
42 ÷ ☐ = 6
7
2
64 ÷ 8 = ☐
8
3
☐ × 2 = 16
8
4
40 ÷ 8 = ☐
5
5
56 ÷ ☐ = 7
8
6
☐ × 9 = 45
5
7
8 × 10 = ☐
80
8
40 ÷ ☐ = 8
5
9
6÷3=☐
2
10
☐ × 6 = 42
7
Week 30 Session 2
Key Skills Answers
Q
Question
Answer
1
575 + 728
1303
2
10 − 8 × 2
−6
3
Write Four Hundred and Twenty Nine
Thousand, Two Hundred and Ten in digits
429 210
4
286.914 ÷ 1000
0.286914
5
Simplify 16/48
6
Which is the highest number, 5 or −7?
5
7
Value of the dot
15
8
List the first 4 multiples of 8
9
What is the value of ∛27?
3
10
5/7 = ☐/14
10
1/3
8, 16, 24, 32
Week 30
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 30 Session 3
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Week 30 Session 3
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 1
19
2
Double 25
50
3
49 + 10 = ☐
59
4
150 + 90 = ☐
240
5
78 − 30 = ☐
48
6
40 + 38 = ☐
78
7
5=2+☐
3
8
68 − 16 = 68 − 8 − ☐
8
9
7+7+7=☐×7
3
10
Draw hands on the clock face showing 8:40
am
See above
Week 30 Session 3
Timestables Answers
Q
Question
Answer
1
☐ ÷ 7 = 10
70
2
☐ × 10 = 80
8
3
8×5=☐
40
4
24 ÷ ☐ = 3
8
5
8 × ☐ = 24
3
6
☐÷5=8
40
7
☐ × 10 = 80
8
8
5×2=☐
10
9
18 ÷ ☐ = 6
3
10
☐÷7=7
49
Week 30 Session 3
Key Skills Answers
Q
Question
1
1183 + 4515
2
(6 − 5)² + 4 × 4
3
Write Seventy Five Thousand, Three
Hundred and Thirteen in digits
75 313
4
5717.71 ÷ 1000
5.71771
5
Simplify 6/18
1/3
6
(−10) + 6
−4
7
Value of the dot
35
8
What is the lowest common multiple of 6 and 8?
24
9
What is the value of 2 cubed?
8
10
1/2 = ☐/16
8
Answer
5698
17
Week 30
Session 3
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Ninja Score to see
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you’ve earned
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Week 30 Session 4
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Week 30 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐ + 15 = 20
5
2
Double 34
68
3
119 + 10 = ☐
129
4
159 + 40 = ☐
199
5
101 − 80 = ☐
21
6
31 + 32 = ☐
63
7
8=1+☐
7
8
26 − 8 = 26 − 6 − ☐
2
9
6+6+6=☐×6
3
10
Draw hands on the clock face showing 1:35
am
See above
Week 30 Session 4
Timestables Answers
Q
Question
Answer
1
28 ÷ 7 = ☐
4
2
8×3=☐
24
3
8 × ☐ = 24
3
4
32 ÷ ☐ = 4
8
5
8 × ☐ = 56
7
6
5×8=☐
40
7
8×3=☐
24
8
45 ÷ ☐ = 9
5
9
3×8=☐
24
10
☐÷7=3
21
Week 30 Session 4
Key Skills Answers
Q
Question
Answer
1
859 + 4680
5539
2
(4 + 86) ÷ 9
10
3
Write 29963 in words. Use the opposite
page for your answer.
4
765.46 ÷ 1000
5
Simplify 4/6
2/3
6
Which is the lowest number, −8 or −3?
−8
7
Value of the dot
9
8
What is the lowest common multiple of 6 and 10?
9
What is the value of 3 cubed?
8
10
3/10 = ☐/70
21
Twenty nine thousand,
nine hundred and sixty
three
0.76546
30
Week 30
Session 4
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Ninja Score to see
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you’ve earned
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Week 30 Session 5
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Week 30 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐ + 6 = 20
14
2
Double 75
150
3
99 + 10 = ☐
109
4
178 + 40 = ☐
218
5
75 − 30 = ☐
45
6
37 + 35 = ☐
72
7
8=2+☐
6
8
48 − 12 = 48 − 8 − ☐
4
9
☐×5=5+5+5+5+5
5
10
What time is shown on the clock?
2:40 pm
Week 30 Session 5
Timestables Answers
Q
Question
Answer
1
35 ÷ 7 = ☐
5
2
☐÷8=6
48
3
8×2=☐
16
4
8 × ☐ = 40
5
5
8 × ☐ = 24
3
6
5 × ☐ = 20
4
7
8 × ☐ = 48
6
8
35 ÷ 5 = ☐
7
9
☐÷3=4
12
10
7 × ☐ = 49
7
Week 30 Session 5
Key Skills Answers
Q
Question
1
2063 + 4490
2
√4 + 8 ÷ 4
3
Write 68706810 in words. Use the opposite
page for your answer.
4
117.8 ÷ 1000
5
Write 30/70 in its simplest form
3/7
6
Difference between −10 and −4
6
7
Value of the dot
18
8
What is the lowest common multiple of 7 and 10?
70
9
What is the cube root of 1000?
10
10
4/3 = ☐/6
8
Answer
6553
4
Sixty eight million, seven
hundred and six thousand,
eight hundred and ten
0.1178
Week 30
Session 5
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Ninja Score to see
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you’ve earned
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Week 31 Session 1
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Week 31 Session 1
Mental Strategies Answers
Q
Question
Answer
1
☐+2=5
3
2
100 = 17 + ☐
83
3
What is half of 9?
4.5
4
105 − 10 = ☐
95
5
62 + ☐ = 70
8
6
23 = 10 + ☐
13
7
9981 − 9979 = ☐
2
8
1 × 5 = 5, so 5 ÷ 5 = ☐
1
9
What is 16:21 in 12 hour clock format?
10
What time will it be 37 minutes after 20:25?
4:21 pm
21:02
Week 31 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 7 = 14
2
2
24 ÷ 8 = ☐
3
3
18 ÷ ☐ = 2
9
4
8 × ☐ = 48
6
5
☐÷3=9
27
6
☐ × 9 = 90
10
7
8 × 10 = ☐
80
8
3 × ☐ = 27
9
9
4×8=☐
32
10
☐÷4=6
24
Week 31 Session 1
Key Skills Answers
Q
Question
Answer
1
838 × 92 = ☐
77 096
2
6931 − 3947
2984
3
2.9 × 6.22
4
62/100 = ☐ %
62
5
(−9) × (−3)
27
6
Round 84.6193 to 1 decimal place
7
(−1) + (−2)
−3
8
Round 545 to 1 s.f.
500
9
What is the letter at (−1,1)?
G
10
What is 2/3 of 6?
4
18.038
84.6
Week 31
Session 1
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Ninja Score to see
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you’ve earned
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Week 31 Session 2
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Week 31 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=4+☐
1
2
☐ + 75 = 100
25
3
What is half of 3?
1.5
4
30 − 10 = ☐
20
5
6 + ☐ = 10
4
6
125 = 10 + ☐
7
2388 − 2381 = ☐
7
8
4 × 8 = 32, so 32 ÷ 4 = ☐
8
9
What is 14:16 in 12 hour clock format?
10
01:36 is how many minutes after 01:03?
115
2:16 pm
33
Week 31 Session 2
Timestables Answers
Q
Question
Answer
1
14 ÷ ☐ = 7
2
2
☐÷8=6
48
3
☐÷9=2
18
4
16 ÷ 8 = ☐
2
5
24 ÷ 3 = ☐
8
6
☐ ÷ 10 = 4
40
7
☐÷8=4
32
8
☐÷3=5
15
9
16 ÷ ☐ = 4
4
10
24 ÷ ☐ = 6
4
Week 31 Session 2
Key Skills Answers
Q
Question
1
61 × 29 = ☐
1769
2
1915 − 987
928
3
2.13 × 0.6
1.278
4
10/100 = ☐ %
10
5
7 × (−8)
−56
6
Round 4.3942 to 1 decimal place
4.4
7
3 + (−6)
−3
8
Round 3.92 to 1 s.f.
4
9
What is the letter at (2,−1)?
U
10
What is 1/6 of 30?
5
Answer
Week 31
Session 2
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Ninja Score to see
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you’ve earned
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Week 31 Session 3
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Week 31 Session 3
Mental Strategies Answers
Q
Question
Answer
1
2+☐=5
3
2
37 + ☐ = 100
63
3
What is half of 3?
1.5
4
118 − 10 = ☐
108
5
97 + ☐ = 100
3
6
134 = 104 + ☐
30
7
4046 − 4042 = ☐
4
8
9 × 6 = 54, so 54 ÷ 6 = ☐
9
9
What is 02:19 in 12 hour clock format?
10
From 3:39 pm, how many minutes until 4:08
pm?
2:19 am
29
Week 31 Session 3
Timestables Answers
Q
Question
Answer
1
☐÷2=7
14
2
72 ÷ 8 = ☐
9
3
☐÷9=7
63
4
8 × ☐ = 80
10
5
3×3=☐
9
6
10 × ☐ = 50
5
7
☐÷8=8
64
8
15 ÷ ☐ = 5
3
9
4 × ☐ = 40
10
10
28 ÷ 4 = ☐
7
Week 31 Session 3
Key Skills Answers
Q
Question
Answer
1
913 × 23 = ☐
20 999
2
1365 − 776
3
7 × 3.48
4
90% as a fraction
5
(−8) × 8
6
Round 47.1697 to 2 decimal places
7
(−5) + (−7)
−12
8
Round 383 to 2 s.f.
380
9
What is the letter at (1,−1)?
T
10
What is 2/7 of 14?
4
589
24.36
90/100 (=9/10)
−64
47.17
Week 31
Session 3
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Week 31 Session 4
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Week 31 Session 4
Mental Strategies Answers
Q
Question
Answer
1
2+☐=5
3
2
☐ + 89 = 100
11
3
What is half of 9?
4.5
4
85 − 10 = ☐
75
5
102 + ☐ = 110
8
6
113 = 53 + ☐
60
7
5241 − 5232 = ☐
9
8
3 × 7 = 21, so 21 ÷ 3 = ☐
7
9
What is 04:42 in 12 hour clock format?
4:42 am
10
What time will it be 13 minutes after 8:13
am?
8:26 am
Week 31 Session 4
Timestables Answers
Q
Question
Answer
1
12 ÷ ☐ = 6
2
2
8×5=☐
40
3
9 × ☐ = 18
2
4
32 ÷ ☐ = 4
8
5
21 ÷ 3 = ☐
7
6
80 ÷ ☐ = 8
10
7
80 ÷ 8 = ☐
10
8
☐÷3=7
21
9
8÷☐=2
4
10
8÷☐=8
1
Week 31 Session 4
Key Skills Answers
Q
Question
Answer
1
670 × 87 = ☐
58 290
2
13063 − 9582
3481
3
9.6 × 7.7
73.92
4
0.26 as a fraction
5
5 × (−7)
6
Round 9.9611 to 3 decimal places
7
(−6) + (−2)
−8
8
Round 52 to 1 s.f.
50
9
What is the letter at (−2,2)?
A
10
What is 1/2 of 20?
10
26/100 (=13/50)
−35
9.961
Week 31
Session 4
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Ninja Score to see
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you’ve earned
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Week 31 Session 5
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Week 31 Session 5
Mental Strategies Answers
Q
Question
Answer
1
☐+4=5
1
2
100 = ☐ + 11
89
3
What is half of 9?
4.5
4
14 − 10 = ☐
4
5
34 + ☐ = 40
6
6
130 = 30 + ☐
100
7
387 − 379 = ☐
8
8
6 × 8 = 48, so 48 ÷ 8 = ☐
6
9
What is 12:01 pm in 24 hour clock format?
10
What time was it 25 minutes before 2:28
pm?
12:01
2:03 pm
Week 31 Session 5
Timestables Answers
Q
Question
Answer
1
☐ × 5 = 10
2
2
8×4=☐
32
3
72 ÷ 9 = ☐
8
4
72 ÷ ☐ = 9
8
5
☐×2=6
3
6
10 × 9 = ☐
90
7
☐ × 4 = 32
8
8
3×6=☐
18
9
16 ÷ 4 = ☐
4
10
24 ÷ 4 = ☐
6
Week 31 Session 5
Key Skills Answers
Q
Question
Answer
1
39 × 664 = ☐
25 896
2
17059 − 8976
8083
3
0.1 × 6.17
0.617
4
40% as a fraction
5
9 × (−10)
6
Round 0.2005 to 3 decimal places
7
5 + (−8)
8
Round 1291 to 1 s.f.
9
What is the letter at (1,2)?
D
10
What is 6/7 of 70?
60
40/100 (=2/5)
−90
0.201
−3
1000
Week 31
Session 5
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Ninja Score to see
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you’ve earned
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Week 32 Session 1
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Week 32 Session 1
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 2
8
2
Double 1
2
3
Halve 39
19.5
4
51 + 30 = ☐
81
5
44 + 47 = ☐
91
6
6=4+☐
2
7
12 + 13 = 12 + 8 + ☐
5
8
47 − 9 = 47 − 7 − ☐
2
9
9 + 363 = ☐
10
48 + 61 = 48 + 60 + ☐
372
1
Week 32 Session 1
Timestables Answers
Q
Question
Answer
1
8 × ☐ = 32
4
2
☐ ÷ 10 = 5
50
3
8×5=☐
40
4
3×7=☐
21
5
18 ÷ ☐ = 3
6
6
☐ × 7 = 56
8
7
3 × ☐ = 24
8
8
20 ÷ 5 = ☐
4
9
42 ÷ 7 = ☐
6
10
8×9=☐
72
Week 32 Session 1
Key Skills Answers
Q
Question
1
344 ÷ 4 = ☐
86
2
8×2+1
17
3
765.28 ÷ 8
95.66
4
7.83 + 88.91
96.74
5
(−36) ÷ (−4)
9
6
If a = 3 b = 7 and c = 4, what is the value of
2ab − c ?
38
7
6 − (−2)
8
8
Is 7 a factor of 24?
9
What is the positive value of √1?
10
What is 150% of £290?
Answer
No
1
£435
Week 32
Session 1
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Ninja Score to see
which Ninja Belt
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Week 32 Session 2
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Week 32 Session 2
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 1
9
2
Double 7
14
3
What is half of 46?
23
4
163 + 20 = ☐
183
5
30 + 27 = ☐
57
6
9=8+☐
1
7
3 + 12 = 3 + 7 + ☐
5
8
29 − 13 = 29 − 9 − ☐
4
9
1 + 263 = ☐
10
94 + 42 = 90 + 40 + ☐
264
6
Week 32 Session 2
Timestables Answers
Q
Question
Answer
1
8×7=☐
56
2
☐ ÷ 10 = 5
50
3
☐÷8=7
56
4
3 × ☐ = 18
6
5
☐÷6=6
36
6
8 × ☐ = 64
8
7
3 × ☐ = 18
6
8
5 × ☐ = 10
2
9
7×5=☐
35
10
56 ÷ ☐ = 7
8
Week 32 Session 2
Key Skills Answers
Q
Question
1
135 ÷ 5 = ☐
27
2
9×3−5
22
3
195.96 ÷ 4
48.99
4
73.65 + 9.29
82.94
5
48 ÷ (−8)
−6
6
If a = 6 b = 4 and c = 2, what is the value of
2a + b/c ?
14
7
(−7) − (−7)
0
8
List all the factors of 3
9
What is the positive square root of 225?
10
What is 105% of £250?
Answer
1 and 3
15
£262.50
Week 32
Session 2
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Ninja Score to see
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you’ve earned
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Week 32 Session 3
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Week 32 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 6
4
2
Double 1
2
3
Halve 31
15.5
4
20 + 40 = ☐
60
5
22 + 20 = ☐
42
6
9=6+☐
3
7
37 + 5 = 37 + 3 + ☐
2
8
68 − 15 = 68 − 8 − ☐
7
9
5 + 222 = ☐
227
10
15 + 25 = 10 + 20 + ☐
10
Week 32 Session 3
Timestables Answers
Q
Question
Answer
1
☐ × 2 = 16
8
2
10 × 2 = ☐
20
3
32 ÷ ☐ = 4
8
4
27 ÷ ☐ = 9
3
5
☐÷6=6
36
6
8 × ☐ = 64
8
7
☐÷3=2
6
8
☐÷5=3
15
9
7 × ☐ = 35
5
10
☐÷8=2
16
Week 32 Session 3
Key Skills Answers
Q
Question
1
368 ÷ 4 = ☐
92
2
7+8×3
31
3
4.75 ÷ 0.1
47.5
4
6.4 + 40.75
47.15
5
(−40) ÷ (−10)
4
6
If a = 4 b = 5 and c = 8, what is the value of
bc / a ?
10
7
7 − (−9)
16
8
List all the factors of 4
9
What is the value of 7²?
10
What is 75% of £290?
Answer
1, 2 and 4
49
£217.50
Week 32
Session 3
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you’ve earned
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Week 32 Session 4
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Week 32 Session 4
Mental Strategies Answers
Q
Question
Answer
1
10 = 8 + ☐
2
2
What is double 7?
14
3
Halve 40
20
4
80 + 20 = ☐
100
5
15 + 16 = ☐
31
6
7=2+☐
5
7
76 + 12 = 76 + 4 + ☐
8
8
43 − 4 = 43 − 3 − ☐
1
9
4 + 511 = ☐
515
10
59 + 46 = 50 + 40 + ☐
15
Week 32 Session 4
Timestables Answers
Q
Question
Answer
1
☐ × 8 = 64
8
2
50 ÷ 10 = ☐
5
3
☐÷8=5
40
4
3×☐=6
2
5
12 ÷ 6 = ☐
2
6
24 ÷ ☐ = 3
8
7
3×5=☐
15
8
10 ÷ 5 = ☐
2
9
7×4=☐
28
10
8 × ☐ = 48
6
Week 32 Session 4
Key Skills Answers
Q
Question
1
693 ÷ 7 = ☐
99
2
4÷2−2
0
3
15.47 ÷ 0.5
30.94
4
20 + 7.29
27.29
5
(−90) ÷ 10
−9
6
If a = 7 b = 4 and c = 3, what is the value of 3b² ?
48
7
10 − (−5)
15
8
What is the highest common factor of 19 and 29?
1
9
What is the positive value of √36?
6
10
What is 50% of £190?
95
Answer
Week 32
Session 4
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Week 32 Session 5
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Week 32 Session 5
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 9
1
2
Double 6
12
3
Halve 43
21.5
4
49 + 70 = ☐
119
5
84 + 86 = ☐
170
6
9=4+☐
5
7
51 + 17 = 51 + 9 + ☐
8
8
29 − 12 = 29 − 9 − ☐
3
9
5 + 949 = ☐
10
15 + 76 = 15 + 70 + ☐
954
6
Week 32 Session 5
Timestables Answers
Q
Question
Answer
1
8×7=☐
56
2
10 × 8 = ☐
80
3
8 × ☐ = 72
9
4
3×4=☐
12
5
6×5=☐
30
6
☐ × 2 = 16
8
7
☐ × 9 = 27
3
8
☐÷5=5
25
9
7 × ☐ = 49
7
10
8×5=☐
40
Week 32 Session 5
Key Skills Answers
Q
Question
Answer
1
26 ÷ 2 = ☐
13
2
49 − 2 ÷ 1
47
3
0.83 ÷ 0.1
8.3
4
93.61 + 7.86
5
64 ÷ (−8)
−8
6
If a = 6 b = 2 and c = 6, what is the value of
ac / 2b ?
9
7
(−4) − (−1)
−3
8
List all the factors of 10
9
What is the positive square root of 4?
10
What is 85% of £80?
101.47
1, 2, 5 and 10
2
£68
Week 32
Session 5
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Week 33 Session 1
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Week 33 Session 1
Mental Strategies Answers
Q
Question
Answer
1
8 + ☐ = 20
12
2
Double 20
40
3
173 + 10 = ☐
183
4
99 − 70 = ☐
29
5
7=3+☐
4
6
102 = 90 + ☐
12
7
62 + 15 = 62 + 8 + ☐
7
8
37 − 9 = 37 − 7 − ☐
2
9
☐×3=3+3+3
3
10
What time is shown on the clock?
2:25 pm
Week 33 Session 1
Timestables Answers
Q
Question
Answer
1
24 ÷ 6 = ☐
4
2
☐÷6=7
42
3
21 ÷ ☐ = 3
7
4
24 ÷ ☐ = 4
6
5
5 × ☐ = 10
2
6
5 × 10 = ☐
50
7
20 ÷ ☐ = 10
2
8
☐ × 10 = 50
5
9
10 × ☐ = 90
9
10
5 × ☐ = 35
7
Week 33 Session 1
Key Skills Answers
Q
Question
Answer
1
411 + 9683
10 094
2
2² + 4 × 4
20
Nine hundred and fifty
thousand, five hundred
and forty six
3
Write 950546 in words.
4
50 − 8.98
5
Simplify 14/70
1/5
6
Which is the highest number, −10 or −9?
−9
7
Value of the dot
24
8
Is 29 a multiple of 6?
No
9
What is the value of ∛1?
1
10
3/8 = ☐/64
24
41.02
Week 33
Session 1
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Week 33 Session 2
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Week 33 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 12 = 20
2
What is double 61?
122
3
44 + 10 = ☐
54
4
75 − 10 = ☐
65
5
9=7+☐
2
6
166 = 146 + ☐
20
7
9+3=9+1+☐
2
8
12 − 4 = 12 − 2 − ☐
2
9
☐×8=8+8+8+8
4
10
Draw hands on the clock face showing
12:40 pm
8
See above
Week 33 Session 2
Timestables Answers
Q
Question
Answer
1
☐÷6=6
36
2
☐ × 8 = 48
6
3
35 ÷ 7 = ☐
5
4
42 ÷ 6 = ☐
7
5
30 ÷ 5 = ☐
6
6
5 × ☐ = 25
5
7
☐×2=4
2
8
5×7=☐
35
9
10 × ☐ = 100
10
10
45 ÷ ☐ = 9
5
Week 33 Session 2
Key Skills Answers
Q
Question
Answer
1
621 + 4705
5326
2
(85 − 5) ÷ 8
10
3
Write Seventeen Thousand, Six Hundred
and Nine in digits
17 609
4
54 − 1.96
52.04
5
Write 8/12 in its simplest form
2/3
6
Difference between −9 and 9
18
7
Value of the dot
8
List the first 4 multiples of 11
9
What is the value of 10³?
10
4/9 = 8/☐
17.5
11, 22, 33, 44
1000
18
Week 33
Session 2
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Week 33 Session 3
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Week 33 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐ + 19 = 20
2
What is double 82?
164
3
58 + 10 = ☐
68
4
101 − 80 = ☐
21
5
9=6+☐
3
6
70 = 60 + ☐
10
7
35 + 12 = 35 + 5 + ☐
7
8
42 − 5 = 42 − 2 − ☐
3
9
2+2+2=☐×2
3
10
Draw hands on the clock face showing 3:45
pm
1
See above
Week 33 Session 3
Timestables Answers
Q
Question
Answer
1
18 ÷ ☐ = 3
6
2
☐ × 8 = 48
6
3
49 ÷ 7 = ☐
7
4
☐ × 6 = 36
6
5
5×3=☐
15
6
5×9=☐
45
7
2×☐=6
3
8
50 ÷ ☐ = 10
5
9
☐ ÷ 10 = 7
70
10
5×9=☐
45
Week 33 Session 3
Key Skills Answers
Q
Question
Answer
1
905 + 7112
8017
2
(95 − 5) ÷ 10
9
Three million, six hundred
and twenty five thousand,
five hundred and forty two
3
Write 3625542 in words.
4
31 − 1.42
5
Write 14/35 in its simplest form
2/5
6
5 − 10
−5
7
Value of the dot
8
What is the lowest common multiple of 5 and 7?
9
What is the value of 2 cubed?
8
10
8/2 = ☐/8
32
29.58
12.5
35
Week 33
Session 3
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Week 33 Session 4
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Week 33 Session 4
Mental Strategies Answers
Q
Question
Answer
1
20 = 12 + ☐
8
2
What is double 22?
44
3
51 + 10 = ☐
61
4
13 − 10 = ☐
3
5
6=2+☐
4
6
142 = 70 + ☐
72
7
1 + 17 = 1 + 9 + ☐
8
8
63 − 12 = 63 − 3 − ☐
9
9
3+3+3+3+3=☐×3
5
10
Draw hands on the clock face showing 6:55
am
See above
Week 33 Session 4
Timestables Answers
Q
Question
Answer
1
30 ÷ ☐ = 5
6
2
6 × 10 = ☐
60
3
63 ÷ 7 = ☐
9
4
☐ × 10 = 60
6
5
5×3=☐
15
6
25 ÷ ☐ = 5
5
7
☐×3=6
2
8
5×7=☐
35
9
60 ÷ 10 = ☐
6
10
5 × ☐ = 45
9
Week 33 Session 4
Key Skills Answers
Q
Question
Answer
1
7500 + 7022
14 522
2
(2 + 48) ÷ 10
5
Eight million, two hundred
and forty four thousand,
four hundred and nine
3
Write 8244409 in words
4
78 − 9.01
5
Write 36/54 in its simplest form
2/3
6
(−9) + 4
−5
7
Value of the dot
21
8
Is 6 a multiple of 2?
9
What is the value of 1³?
1
10
8/10 = ☐/50
40
68.99
Yes
Week 33
Session 4
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Week 33 Session 5
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Week 33 Session 5
Mental Strategies Answers
Q
Question
Answer
1
19 + ☐ = 20
1
2
What is double 23?
46
3
70 + 10 = ☐
80
4
86 − 80 = ☐
6
5
5=2+☐
3
6
26 = 16 + ☐
10
7
41 + 12 = 41 + 9 + ☐
3
8
78 − 10 = 78 − 8 − ☐
2
9
☐×7=7+7+7+7
4
10
What time is shown on the clock?
7:10 am
Week 33 Session 5
Timestables Answers
Q
Question
Answer
1
6 × ☐ = 24
4
2
54 ÷ 6 = ☐
9
3
63 ÷ 7 = ☐
9
4
6 × ☐ = 24
4
5
35 ÷ 5 = ☐
7
6
5 × ☐ = 25
5
7
2×3=☐
6
8
15 ÷ 5 = ☐
3
9
10 × 5 = ☐
50
10
45 ÷ 5 = ☐
9
Week 33 Session 5
Key Skills Answers
Q
Question
Answer
1
717 + 2778
3495
2
(2 − 1)² + 4 × 4
3
Write Eight Hundred and Sixty Eight Thousand,
Seven Hundred and Twenty Five in digits
4
95.92 − 38
5
Simplify 50/60
5/6
6
Which is the lowest number, −10 or −9?
−10
7
Value of the dot
8
Is 12 a multiple of 9?
9
What is the cube root of 64?
4
10
7/5 = ☐/35
49
17
878 725
57.92
6
No
Week 33
Session 5
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Week 34 Session 1
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Week 34 Session 1
Mental Strategies Answers
Q
Question
Answer
1
2+☐=5
3
2
☐ + 2 = 100
98
3
What is half of 8?
4
4
148 − 10 = ☐
138
5
94 + ☐ = 100
6
6
82 = 50 + ☐
32
7
7407 − 7398 = ☐
9
8
2 × 6 = 12, so 12 ÷ 6 = ☐
2
9
What is 10:10 am in 24 hour clock format?
10:10
10
What time was it 31 minutes before 16:16?
15:45
Week 34 Session 1
Timestables Answers
Q
Question
Answer
1
4÷☐=2
2
2
☐ × 10 = 40
4
3
3 × ☐ = 21
7
4
15 ÷ ☐ = 3
5
5
81 ÷ 9 = ☐
9
6
☐ × 7 = 35
5
7
☐ × 4 = 16
4
8
30 ÷ 3 = ☐
10
9
16 ÷ ☐ = 4
4
10
50 ÷ 5 = ☐
10
Week 34 Session 1
Key Skills Answers
Q
Question
1
17 × 519 = ☐
8823
2
1581 − 801
780
3
2.93 × 8
4
0.58 ÷ 1000
5
(−4) × 7
6
Round 1.8532 to 3 decimal places
7
5 + (−2)
8
Round 1.9966 to 2 s.f.
9
What is the letter at (1,−1)?
T
10
What is 4/8 of 16?
8
Answer
23.44
0.00058
−28
1.853
3
2.0
Week 34
Session 1
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Week 34 Session 2
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Week 34 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=3+☐
2
2
78 + ☐ = 100
22
3
Halve 4
2
4
142 − 10 = ☐
132
5
128 + ☐ = 130
2
6
33 = 20 + ☐
13
7
279 − 277 = ☐
2
8
2 × 5 = 10, so 10 ÷ 5 = ☐
2
9
What is 01:19 in 12 hour clock format?
10
From 20:26, how many minutes until 20:53?
1:19 am
27
Week 34 Session 2
Timestables Answers
Q
Question
Answer
1
4÷☐=2
2
2
4 × ☐ = 24
6
3
27 ÷ ☐ = 9
3
4
☐ × 5 = 25
5
5
9×7=☐
63
6
☐÷5=7
35
7
4×7=☐
28
8
☐÷3=3
9
9
24 ÷ ☐ = 6
4
10
5 × ☐ = 20
4
Week 34 Session 2
Key Skills Answers
Q
Question
1
158 × 20 = ☐
3160
2
4866 − 4546
320
3
2.8 × 5.2
14.56
4
5.6 ÷ 1000
0.0056
5
(−5) × 9
−45
6
Round 1.436 to 1 decimal place
1.4
7
6 + (−1)
8
Round 9615 to 2 s.f.
9
What is the letter at (−1,−1)?
R
10
What is 2/3 of 9?
6
Answer
5
9600
Week 34
Session 2
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Week 34 Session 3
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Week 34 Session 3
Mental Strategies Answers
Q
Question
Answer
1
5=☐+3
2
2
☐ + 80 = 100
20
3
Halve 2
1
4
85 − 10 = ☐
75
5
182 + ☐ = 190
8
6
179 = 29 + ☐
150
7
4705 − 4698 = ☐
7
8
3 × 6 = 18, so 18 ÷ 6 = ☐
3
9
What is 7:14 am in 24 hour clock format?
10
From 08:22, how many minutes until 08:35?
07:14
13
Week 34 Session 3
Timestables Answers
Q
Question
Answer
1
4÷☐=2
2
2
☐ × 3 = 12
4
3
9÷☐=3
3
4
20 ÷ ☐ = 4
5
5
9 × ☐ = 18
2
6
☐ × 5 = 25
5
7
36 ÷ 4 = ☐
9
8
☐ × 8 = 24
3
9
8÷4=☐
2
10
☐ × 7 = 35
5
Week 34 Session 3
Key Skills Answers
Q
Question
1
85 × 12 = ☐
1020
2
1766 − 884
882
3
2 × 6.2
12.4
4
45.863 ÷ 100
5
(−6) × (−2)
6
Round 9.1466 to 3 decimal places
7
(−4) + (−6)
8
Round 0.00863 to 2 s.f.
9
What is the letter at (−1,−1)?
R
10
What is 5/9 of 81?
45
Answer
0.45863
12
9.147
−10
0.0086
Week 34
Session 3
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Week 34 Session 4
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Week 34 Session 4
Mental Strategies Answers
Q
Question
Answer
1
1+☐=5
4
2
☐ + 86 = 100
14
3
What is half of 9?
4.5
4
30 − 10 = ☐
20
5
116 + ☐ = 120
4
6
181 = 80 + ☐
101
7
3568 − 3566 = ☐
2
8
7 × 4 = 28, so 28 ÷ 4 = ☐
7
9
What is 16:39 in 12 hour clock format?
10
From 5:04 am, how many minutes until 6:01
am?
4:39 pm
57
Week 34 Session 4
Timestables Answers
Q
Question
Answer
1
2 × ☐ = 20
10
2
32 ÷ ☐ = 8
4
3
☐ × 10 = 30
3
4
☐÷5=4
20
5
9 × ☐ = 18
2
6
☐ × 10 = 50
5
7
☐ × 10 = 40
4
8
☐÷3=8
24
9
4×2=☐
8
10
☐ × 9 = 45
5
Week 34 Session 4
Key Skills Answers
Q
Question
Answer
1
347 × 76 = ☐
26 372
2
11181 − 8220
2961
3
7 × 4.9
34.3
4
9.575 ÷ 10
0.9575
5
(−1) × (−2)
2
6
Round 0.635 to 1 decimal place
0.6
7
(−6) + (−9)
−15
8
Round 0.006401 to 2 s.f.
0.0064
9
What is the letter at (1,1)?
I
10
What is 2/4 of 12?
6
Week 34
Session 4
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Week 34 Session 5
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Week 34 Session 5
Mental Strategies Answers
Q
Question
Answer
1
3+☐=5
2
2
63 + ☐ = 100
37
3
What is half of 2?
1
4
51 − 10 = ☐
41
5
138 + ☐ = 140
2
6
88 = 10 + ☐
78
7
517 − 508 = ☐
9
8
1 × 7 = 7, so 7 ÷ 1 = ☐
7
9
What is 19:24 in 12 hour clock format?
10
From 6:28 am, how many minutes until 6:58
am?
7:24 pm
30
Week 34 Session 5
Timestables Answers
Q
Question
Answer
1
14 ÷ ☐ = 7
2
2
☐ × 3 = 12
4
3
18 ÷ 3 = ☐
6
4
☐ × 10 = 50
5
5
☐ × 2 = 18
9
6
40 ÷ 5 = ☐
8
7
4×☐=8
2
8
☐ × 10 = 30
3
9
4×9=☐
36
10
☐ × 10 = 50
5
Week 34 Session 5
Key Skills Answers
Q
Question
Answer
1
747 × 53 = ☐
39 591
2
13688 − 6928
6760
3
1.1 × 4.3
4.73
4
4.895 ÷ 1000
5
9 × (−9)
−81
6
Round 0.7346 to 2 decimal places
0.73
7
9 + (−9)
0
8
Round 88 to 1 s.f.
90
9
What is the letter at (1,2)?
D
10
What is 4/7 of 42?
24
0.004895
Week 34
Session 5
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 35 Session 1
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Week 35 Session 1
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 7
3
2
What is double 7?
14
3
Halve 98
49
4
99 + 80 = ☐
179
5
81 + 80 = ☐
161
6
39 + 5 = 39 + 1 + ☐
4
7
308 − 301 = ☐
7
8
5 + 904 = ☐
9
3+3+3+3=☐×3
4
10
15 + 87 = 10 + 80 + ☐
12
909
Week 35 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 3 = 18
6
2
8 × ☐ = 40
5
3
80 ÷ 8 = ☐
10
4
☐ ÷ 10 = 8
80
5
6 × ☐ = 42
7
6
☐ × 3 = 12
4
7
9 × ☐ = 90
10
8
9×9=☐
81
9
10 × ☐ = 30
3
10
☐ × 7 = 56
8
Week 35 Session 1
Key Skills Answers
Q
Question
1
752 ÷ 8 = ☐
94
2
3×5+5
20
3
7.55 ÷ 0.1
75.5
4
1.57 + 6.42
7.99
5
(−3) ÷ 1
−3
6
If a = 4 b = 6 and c = 9, what is the value of
2ab − c ?
39
7
4 − (−6)
10
8
List all the factors of 31
9
What is the positive value of √169?
10
What is 115% of £180?
Answer
1 and 31
13
£207
Week 35
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 35 Session 2
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Week 35 Session 2
Mental Strategies Answers
Q
Question
Answer
1
10 = 9 + ☐
1
2
What is double 4?
8
3
What is half of 26?
13
4
113 + 30 = ☐
143
5
50 + 47 = ☐
97
6
8+5=8+2+☐
3
7
384 − 380 = ☐
4
8
4 + 560 = ☐
9
7+7+7+7+7=☐×7
5
10
92 + 77 = 92 + 70 + ☐
7
564
Week 35 Session 2
Timestables Answers
Q
Question
Answer
1
☐÷6=6
36
2
56 ÷ 8 = ☐
7
3
72 ÷ ☐ = 9
8
4
10 × ☐ = 60
6
5
6 × ☐ = 54
9
6
12 ÷ ☐ = 3
4
7
9 × ☐ = 63
7
8
63 ÷ 9 = ☐
7
9
30 ÷ 10 = ☐
3
10
☐÷8=7
56
Week 35 Session 2
Key Skills Answers
Q
Question
1
364 ÷ 4 = ☐
91
2
97 − 8 × 3
73
3
57.26 ÷ 7
8.18
4
11 + 5.22
16.22
5
80 ÷ (−8)
−10
6
If a = 2 b = 5 and c = 4, what is the value of
(2b − a)² ?
64
7
(−3) − (−9)
6
8
List all the factors of 34
9
What is the value of 11 squared?
10
What is 25% of £30?
Answer
1, 2, 17 and 34
121
£7.50
Week 35
Session 2
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 35 Session 3
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Week 35 Session 3
Mental Strategies Answers
Q
Question
Answer
1
4 + ☐ = 10
6
2
What is double 8?
16
3
What is half of 23?
11.5
4
79 + 50 = ☐
129
5
41 + 38 = ☐
79
6
54 + 14 = 54 + 6 + ☐
8
7
985 − 982 = ☐
3
8
2 + 209 = ☐
9
☐×5=5+5+5
3
10
31 + 32 = 31 + 30 + ☐
2
211
Week 35 Session 3
Timestables Answers
Q
Question
Answer
1
30 ÷ ☐ = 5
6
2
☐ × 4 = 32
8
3
8 × ☐ = 64
8
4
20 ÷ ☐ = 2
10
5
18 ÷ ☐ = 3
6
6
4×6=☐
24
7
9 × ☐ = 36
4
8
63 ÷ 9 = ☐
7
9
☐ ÷ 10 = 10
100
10
8 × ☐ = 40
5
Week 35 Session 3
Key Skills Answers
Q
Question
Answer
1
80 ÷ 2 = ☐
40
2
3÷3+9
10
3
71.76 ÷ 8
8.97
4
63.66 + 4.65
68.31
5
20 ÷ (−4)
−5
6
If a = 2 b = 2 and c = 8, what is the value of
ac / 2b ?
4
7
(−10) − (−9)
−1
8
List all the factors of 39
9
What is the value of 11²?
121
10
What is 55% of £120?
£66
1, 3, 13 and 39
Week 35
Session 3
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 35 Session 4
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Week 35 Session 4
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 5
5
2
What is double 6?
12
3
What is half of 61?
30.5
4
111 + 50 = ☐
161
5
23 + 22 = ☐
45
6
62 + 9 = 62 + 8 + ☐
1
7
600 − 597 = ☐
3
8
9 + 499 = ☐
9
2+2+2=☐×2
3
10
28 + 18 = 28 + 10 + ☐
8
508
Week 35 Session 4
Timestables Answers
Q
Question
Answer
1
6×4=☐
24
2
8×2=☐
16
3
☐ × 8 = 64
8
4
60 ÷ 10 = ☐
6
5
6 × ☐ = 54
9
6
8÷4=☐
2
7
81 ÷ ☐ = 9
9
8
☐ × 5 = 45
9
9
40 ÷ ☐ = 4
10
10
80 ÷ 8 = ☐
10
Week 35 Session 4
Key Skills Answers
Q
Question
1
231 ÷ 3 = ☐
77
2
6÷3−2
0
3
23.94 ÷ 3
7.98
4
22.46 + 5.98
28.44
5
4 ÷ (−2)
−2
6
If a = 8 b = 9 and c = 6, what is the value of (2b/c)²
?
9
7
7 − (−2)
9
8
What is the highest common factor of 2 and 26?
2
9
What is the value of (−4) squared?
16
10
What is 50% of £200?
Answer
£100
Week 35
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 35 Session 5
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Week 35 Session 5
Mental Strategies Answers
Q
Question
Answer
1
8 + ☐ = 10
2
2
Double 6
12
3
Halve 98
49
4
12 + 50 = ☐
62
5
62 + 63 = ☐
125
6
14 + 11 = 14 + 6 + ☐
5
7
689 − 681 = ☐
8
8
5 + 696 = ☐
9
☐×4=4+4+4
3
10
91 + 67 = 91 + 60 + ☐
7
701
Week 35 Session 5
Timestables Answers
Q
Question
Answer
1
☐ × 9 = 54
6
2
☐ × 2 = 16
8
3
☐ × 10 = 80
8
4
☐ × 4 = 40
10
5
6×5=☐
30
6
☐ × 9 = 36
4
7
54 ÷ ☐ = 6
9
8
72 ÷ ☐ = 8
9
9
10 × ☐ = 50
5
10
32 ÷ ☐ = 4
8
Week 35 Session 5
Key Skills Answers
Q
Question
1
330 ÷ 6 = ☐
55
2
8+5×2
18
3
15.69 ÷ 0.5
4
6+7
13
5
(−8) ÷ (−8)
1
6
If a = 5 b = 7 and c = 4, what is the value of
c / (b − a) ?
2
7
3 − (−10)
13
8
List all the factors of 40
9
What is the positive square root of 81?
9
10
What is 15% of £20?
£3
Answer
31.38
1, 2, 4, 5, 8, 10, 20 and 40
Week 35
Session 5
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Ninja Score to see
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you’ve earned
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Week 36 Session 1
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Week 36 Session 1
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 3
17
2
What is double 22?
44
3
189 + 10 = ☐
199
4
55 − 30 = ☐
25
5
3=2+☐
1
6
77 − 11 = 77 − 7 − ☐
4
7
9 + 976 = ☐
8
2+2+2=☐×2
3
9
5 × 2 = 10, so 10 ÷ 5 = ☐
2
10
What time is shown on the clock?
985
8:25 pm
Week 36 Session 1
Timestables Answers
Q
Question
Answer
1
☐ × 7 = 49
7
2
2 × 10 = ☐
20
3
☐ × 2 = 14
7
4
☐ × 2 = 18
9
5
☐÷5=3
15
6
☐ × 4 = 32
8
7
☐÷8=4
32
8
2×3=☐
6
9
2×5=☐
10
10
☐÷4=7
28
Week 36 Session 1
Key Skills Answers
Q
Question
Answer
1
242 + 2047
2289
2
(7 − 4)² + 1 × 2
3
1000 × 2.73
2730
4
44 − 8.85
35.15
5
Simplify 64/80
6
Difference between 2 and −2
4
7
Value of the dot
21
8
Is 19 a multiple of 6?
No
9
What is the cube root of 125?
5
10
7/1 = 49/☐
7
11
4/5
Week 36
Session 1
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Ninja Score to see
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you’ve earned
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Week 36 Session 2
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Week 36 Session 2
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 5
15
2
Double 12
24
3
130 + 10 = ☐
140
4
135 − 70 = ☐
65
5
8=1+☐
7
6
37 − 11 = 37 − 7 − ☐
4
7
7 + 502 = ☐
8
☐×2=2+2+2+2+2
5
9
5 × 9 = 45, so 45 ÷ 5 = ☐
9
10
Draw hands on the clock face showing 1:50
pm
509
See above
Week 36 Session 2
Timestables Answers
Q
Question
Answer
1
☐ × 3 = 21
7
2
18 ÷ ☐ = 9
2
3
28 ÷ 7 = ☐
4
4
9×6=☐
54
5
☐÷5=3
15
6
8×8=☐
64
7
☐ × 4 = 32
8
8
18 ÷ ☐ = 9
2
9
16 ÷ ☐ = 8
2
10
16 ÷ ☐ = 4
4
Week 36 Session 2
Key Skills Answers
Q
Question
1
2109 + 6973
9082
2
√36 + 6 ÷ 1
12
3
10 × 0.35
3.5
4
96.42 − 55.13
5
Write 56/70 in its simplest form
4/5
6
3−5
−2
7
Value of the dot
24
8
Is 13 a multiple of 4?
No
9
What is the value of 2 cubed?
8
10
9/7 = 18/☐
14
Answer
41.29
Week 36
Session 2
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Week 36 Session 3
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Week 36 Session 3
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 13
7
2
Double 33
66
3
140 + 10 = ☐
150
4
73 − 30 = ☐
43
5
5=2+☐
3
6
51 − 4 = 51 − 1 − ☐
3
7
7 + 572 = ☐
579
8
9+9=☐×9
2
9
3 × 7 = 21, so 21 ÷ 3 = ☐
7
10
Draw hands on the clock face showing 3:00
pm
See above
Week 36 Session 3
Timestables Answers
Q
Question
Answer
1
☐ × 9 = 63
7
2
14 ÷ ☐ = 7
2
3
7 × ☐ = 14
2
4
9 × ☐ = 63
7
5
☐ × 9 = 45
5
6
80 ÷ ☐ = 10
8
7
☐ × 2 = 16
8
8
2 × ☐ = 16
8
9
☐÷2=3
6
10
4 × ☐ = 28
7
Week 36 Session 3
Key Skills Answers
Q
Question
Answer
1
400 + 519
919
2
√16 + 12 ÷ 3
8
3
5.76 × 1000
5760
4
86.95 − 33.5
35.45
5
Write 4/12 in its simplest form
1/3
6
Which is the lowest number, −10 or −1?
−10
7
Value of the dot
35
8
What is the lowest common multiple of 3
and 7?
21
9
What is the value of ∛64?
4
10
7/4 = ☐/28
49
Week 36
Session 3
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Ninja Score to see
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Week 36 Session 4
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Week 36 Session 4
Mental Strategies Answers
Q
Question
Answer
1
6 + ☐ = 20
14
2
Double 99
198
3
189 + 10 = ☐
199
4
83 − 30 = ☐
53
5
7=2+☐
5
6
19 − 18 = 19 − 9 − ☐
9
7
7 + 516 = ☐
8
3+3+3+3+3=☐×3
5
9
3 × 7 = 21, so 21 ÷ 3 = ☐
7
10
What time is shown on the clock?
523
12:15 am
Week 36 Session 4
Timestables Answers
Q
Question
Answer
1
7×8=☐
56
2
☐×2=4
2
3
63 ÷ 7 = ☐
9
4
9×2=☐
18
5
☐ × 4 = 20
5
6
48 ÷ 8 = ☐
6
7
64 ÷ ☐ = 8
8
8
☐ × 9 = 18
2
9
12 ÷ 2 = ☐
6
10
8÷4=☐
2
Week 36 Session 4
Key Skills Answers
Q
Question
Answer
1
6721 + 9029
15 750
2
(8 + 3) × 10
110
3
1000 × 6.08
6080
4
75.02 − 69.12
5.9
5
Simplify 24/32
3/4
6
Difference between 5 and −5
10
7
Value of the dot
17.5
8
Is 29 a multiple of 9?
No
9
What is the cube root of 1000?
10
10
1/10 = ☐/40
4
Week 36
Session 4
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Ninja Score to see
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Week 36 Session 5
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Week 36 Session 5
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 10
10
2
What is double 14?
28
3
104 + 10 = ☐
114
4
56 − 20 = ☐
36
5
4=3+☐
1
6
89 − 12 = 89 − 9 − ☐
3
7
8 + 922 = ☐
8
☐×8=8+8+8
3
9
3 × 7 = 21, so 21 ÷ 7 = ☐
3
10
What time is shown on the clock?
930
4:30 pm
Week 36 Session 5
Timestables Answers
Q
Question
Answer
1
☐ × 4 = 28
7
2
2×☐=4
2
3
7 × ☐ = 35
5
4
☐ × 8 = 72
9
5
☐÷5=3
15
6
32 ÷ 8 = ☐
4
7
8×7=☐
56
8
2×4=☐
8
9
☐÷2=7
14
10
4 × ☐ = 32
8
Week 36 Session 5
Key Skills Answers
Q
Question
Answer
1
760 + 1437
2197
2
(1 + 29) ÷ 5
6
3
29.785 × 1000
4
80 − 6.7
73.3
5
Simplify 8/32
1/4
6
Difference between 5 and −9
14
7
Value of the dot
65
8
What is the lowest common multiple of 7
and 8?
56
9
What is the value of 3³?
27
10
6/10 = 30/☐
50
29 785
Week 36
Session 5
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Week 37 Session 1
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Week 37 Session 1
Mental Strategies Answers
Q
Question
Answer
1
4+☐=5
1
2
99 + ☐ = 100
1
3
What is half of 9?
4.5
4
152 − 10 = ☐
142
5
104 + ☐ = 110
6
6
122 = 82 + ☐
40
7
5970 − 5961 = ☐
9
8
5 × 8 = 40, so 40 ÷ 5 = ☐
8
9
What is 11:19 am in 24 hour clock format?
11:19
10
What time was it 25 minutes before 22:12?
21:47
Week 37 Session 1
Timestables Answers
Q
Question
Answer
1
☐÷6=7
42
2
☐ ÷ 10 = 5
50
3
36 ÷ ☐ = 9
4
4
2×☐=4
2
5
6 × ☐ = 60
10
6
10 ÷ 5 = ☐
2
7
☐ × 10 = 30
3
8
☐ × 7 = 42
6
9
☐ × 8 = 64
8
10
21 ÷ 3 = ☐
7
Week 37 Session 1
Key Skills Answers
Q
Question
Answer
1
172 × 91 = ☐
15 652
2
1081 − 853
228
Seventy three million,
eight hundred and eighty
nine thousand and thirty
six
3
Write 73889036 in words
4
52.02 ÷ 10
5
10 × (−6)
−60
6
Round 54.7161 to 1 decimal place
54.7
7
(−9) + (−4)
−13
8
Round 0.8652 to 1 s.f.
0.9
9
What is the letter at (0,2)?
5.202
P
Week 37
Session 1
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Week 37 Session 2
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Week 37 Session 2
Mental Strategies Answers
Q
Question
Answer
1
5=☐+2
3
2
100 = ☐ + 4
96
3
What is half of 2?
1
4
72 − 10 = ☐
62
5
69 + ☐ = 70
1
6
126 = 106 + ☐
20
7
169 − 162 = ☐
7
8
5 × 4 = 20, so 20 ÷ 5 = ☐
4
9
What is 18:34 in 12 hour clock format?
6:34 pm
10
What time will it be 11 minutes after 6:48
am?
6:59 am
Week 37 Session 2
Timestables Answers
Q
Question
Answer
1
☐ × 8 = 48
6
2
☐ ÷ 10 = 9
90
3
☐÷4=4
16
4
12 ÷ ☐ = 6
2
5
6×6=☐
36
6
☐÷5=5
25
7
3×4=☐
12
8
☐÷6=6
36
9
56 ÷ 8 = ☐
7
10
3×2=☐
6
Week 37 Session 2
Key Skills Answers
Q
Question
Answer
1
838 × 27 = ☐
22 626
2
19323 − 9976
9347
Nine million, six hundred
and sixty four thousand,
three hundred and thirteen
3
Write 9664313 in words
4
4.97 ÷ 10
5
(−4) × 8
6
Round 27.3682 to 3 decimal places
7
(−7) + (−8)
−15
8
Round 592 to 1 s.f.
600
9
What is the letter at (−2,−1)?
Q
10
What is 2/4 of 8?
4
0.497
−32
27.368
Week 37
Session 2
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Ninja Score to see
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Week 37 Session 3
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Week 37 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐+1=5
4
2
89 + ☐ = 100
11
3
What is half of 6?
3
4
64 − 10 = ☐
54
5
123 + ☐ = 130
7
6
166 = 90 + ☐
76
7
8529 − 8523 = ☐
6
8
5 × 8 = 40, so 40 ÷ 8 = ☐
5
9
What is 11:59 pm in 24 hour clock format?
23:59
10
What time was it 16 minutes before 06:19?
06:03
Week 37 Session 3
Timestables Answers
Q
Question
Answer
1
48 ÷ 6 = ☐
8
2
50 ÷ 10 = ☐
5
3
☐ × 10 = 40
4
4
☐÷2=5
10
5
54 ÷ ☐ = 9
6
6
5 × ☐ = 45
9
7
3×☐=6
2
8
☐÷6=7
42
9
☐÷8=4
32
10
6÷3=☐
2
Week 37 Session 3
Key Skills Answers
Q
Question
1
37 × 59 = ☐
2183
2
17692 − 8922
8770
3
Write Sixty Four Thousand, Five Hundred
and Eighty Five in digits
64 585
4
952.546 ÷ 10
95.2546
5
(−9) × 1
6
Round 4.2512 to 3 decimal places
7
4 + (−4)
8
Round 0.0119 to 2 s.f.
9
What is the letter at (0,1)?
H
10
What is 2/4 of 12?
6
Answer
−9
4.251
0
0.012
Week 37
Session 3
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Ninja Score to see
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you’ve earned
today!
Week 37 Session 4
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Week 37 Session 4
Mental Strategies Answers
Q
Question
Answer
1
5=3+☐
2
2
100 = ☐ + 49
51
3
Halve 5
2.5
4
92 − 10 = ☐
82
5
172 + ☐ = 180
8
6
108 = 20 + ☐
88
7
730 − 724 = ☐
6
8
5 × 8 = 40, so 40 ÷ 8 = ☐
5
9
What is 21:00 in 12 hour clock format?
10
What time was it 40 minutes before 15:26?
9:00 pm
14:46
Week 37 Session 4
Timestables Answers
Q
Question
Answer
1
☐÷6=3
18
2
10 × 3 = ☐
30
3
28 ÷ ☐ = 7
4
4
2×3=☐
6
5
48 ÷ ☐ = 8
6
6
5×5=☐
25
7
21 ÷ 3 = ☐
7
8
60 ÷ ☐ = 10
6
9
72 ÷ 8 = ☐
9
10
3×5=☐
15
Week 37 Session 4
Key Skills Answers
Q
Question
Answer
1
141 × 97 = ☐
13 677
2
17750 − 9394
8356
3
Write Fifty Nine Million, Five Hundred and Ninety Seven
Thousand, Four Hundred and Forty Five in digits
4
0.56 ÷ 10
0.056
5
(−4) × (−9)
36
6
Round 0.753 to 1 decimal place
0.8
7
1 + (−6)
−5
8
Round 5233 to 2 s.f.
9
What is the letter at (1,1)?
10
What is 4/5 of 35?
59 597 445
5200
I
28
Week 37
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 37 Session 5
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Week 37 Session 5
Mental Strategies Answers
Q
Question
Answer
1
5=☐+1
4
2
72 + ☐ = 100
28
3
Halve 9
4.5
4
86 − 10 = ☐
76
5
121 + ☐ = 130
9
6
127 = 107 + ☐
20
7
7029 − 7022 = ☐
7
8
6 × 1 = 6, so 6 ÷ 6 = ☐
1
9
What is 20:19 in 12 hour clock format?
8:19 pm
10
What time will it be 21 minutes after 5:27
pm?
5:48 pm
Week 37 Session 5
Timestables Answers
Q
Question
Answer
1
☐ × 6 = 36
6
2
10 × ☐ = 90
9
3
4 × ☐ = 28
7
4
10 ÷ ☐ = 5
2
5
☐ × 5 = 30
6
6
5×8=☐
40
7
3 × ☐ = 12
4
8
6×8=☐
48
9
☐÷8=6
48
10
☐÷3=7
21
Week 37 Session 5
Key Skills Answers
Q
Question
1
60 × 47 = ☐
2820
2
14790 − 8133
6657
Answer
Seventy three thousand,
five hundred and
seventeen
3
Write 73517 in words
4
223.81 ÷ 10
5
(−7) × 6
6
Round 0.4508 to 3 decimal places
7
7 + (−6)
1
8
Round 33.0679 to 2 s.f.
33
9
What is the letter at (1,1)?
I
10
What is 2/3 of 9?
6
22.381
−42
0.451
Week 37
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 38 Session 1
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Week 38 Session 1
Mental Strategies Answers
Q
Question
Answer
1
6 + ☐ = 10
4
2
What is double 8?
16
3
What is half of 76?
38
4
177 + 20 = ☐
197
5
93 + 90 = ☐
183
6
15 + 14 = 15 + 5 + ☐
7
5 + 740 = ☐
8
73 + 15 = 73 + 10 + ☐
9
Draw hands on the clock face showing 1:40
pm
10
What is 16:29 in 12 hour clock format?
9
745
5
See above
4:29 pm
Week 38 Session 1
Timestables Answers
Q
Question
Answer
1
☐÷9=6
54
2
21 ÷ 7 = ☐
3
3
☐ ÷ 4 = 10
40
4
8×3=☐
24
5
3 × ☐ = 21
7
6
3×2=☐
6
7
☐÷6=7
42
8
☐ × 10 = 50
5
9
14 ÷ 7 = ☐
2
10
5 × ☐ = 20
4
Week 38 Session 1
Key Skills Answers
Q
Question
1
196 ÷ 2 = ☐
98
2
8÷4+5
7
3
0.3 as a fraction
4
8.49 + 96.99
105.48
5
(−24) ÷ (−6)
4
6
If a = 10 b = 3 and c = 4, what is the value of
5a − bc ?
38
7
(−4) − (−7)
3
8
Is 16 a factor of 33?
No
9
What is the positive value of √121?
11
10
What is 115% of £370?
Answer
3/10
£425.50
Week 38
Session 1
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 38 Session 2
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Week 38 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 1 = 10
9
2
What is double 4?
8
3
Halve 65
130
4
125 + 90 = ☐
215
5
45 + 47 = ☐
92
6
75 + 10 = 75 + 5 + ☐
5
7
1 + 977 = ☐
8
46 + 56 = 46 + 50 + ☐
9
Draw hands on the clock face showing 8:10
pm
10
What is 10:59 in 12 hour clock format?
978
6
See above
10:59
Week 38 Session 2
Timestables Answers
Q
Question
Answer
1
81 ÷ ☐ = 9
9
2
42 ÷ ☐ = 6
7
3
40 ÷ ☐ = 10
4
4
☐ × 8 = 64
8
5
24 ÷ 3 = ☐
8
6
☐÷3=3
9
7
6 × ☐ = 42
7
8
☐ × 7 = 35
5
9
49 ÷ ☐ = 7
7
10
☐ × 9 = 45
5
Week 38 Session 2
Key Skills Answers
Q
Question
1
252 ÷ 7 = ☐
36
2
4 + 16 ÷ 4
8
3
9/10 as a decimal number
4
9 + 5.99
5
(−10) ÷ (−10)
6
If a = 1 b = 4 and c = 4, what is the value of
2b³ ?
7
(−5) − (−10)
8
List all the factors of 7
9
What is the value of 10 squared?
100
10
What is 35% of £100?
£35
Answer
0.9
14.99
1
128
5
1 and 7
Week 38
Session 2
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Week 38 Session 3
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Week 38 Session 3
Mental Strategies Answers
Q
Question
Answer
1
10 = 8 + ☐
2
2
What is double 8?
16
3
What is half of 98?
49
4
163 + 30 = ☐
193
5
24 + 25 = ☐
49
6
31 + 16 = 31 + 9 + ☐
7
7
1 + 214 = ☐
8
85 + 24 = 85 + 20 + ☐
9
What time is shown on the clock?
10
What is 2:48 pm in 24 hour clock format?
215
4
5:05 pm
14:48
Week 38 Session 3
Timestables Answers
Q
Question
Answer
1
☐÷9=7
63
2
☐ × 5 = 35
7
3
4×4=☐
16
4
64 ÷ 8 = ☐
8
5
3 × 10 = ☐
30
6
27 ÷ 3 = ☐
9
7
6 × ☐ = 36
6
8
☐ × 4 = 20
5
9
42 ÷ 7 = ☐
6
10
☐÷5=8
40
Week 38 Session 3
Key Skills Answers
Q
Question
1
308 ÷ 4 = ☐
77
2
15 ÷ 5 − 1
2
3
25/100 = ☐ %
25
4
18 + 1
19
5
36 ÷ (−4)
−9
6
If a = 4 b = 2 and c = 5, what is the value of
2abc − c² ?
55
7
(−4) − (−5)
1
8
List all the factors of 30
9
What is the positive square root of 16?
10
What is 150% of £10?
Answer
1, 2, 3, 5, 6, 10, 15 and 30
4
£15
Week 38
Session 3
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Ninja Score to see
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you’ve earned
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Week 38 Session 4
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Week 38 Session 4
Mental Strategies Answers
Q
Question
Answer
1
10 = ☐ + 7
3
2
Double 3
6
3
Halve 99
49.5
4
57 + 70 = ☐
127
5
26 + 27 = ☐
53
6
25 + 6 = 25 + 5 + ☐
1
7
5 + 461 = ☐
466
8
14 + 67 = 10 + 60 + ☐
11
9
What time is shown on the clock?
10
What is 2:42 am in 24 hour clock format?
09:35 am
02:42
Week 38 Session 4
Timestables Answers
Q
Question
Answer
1
9 × ☐ = 36
4
2
7×2=☐
14
3
32 ÷ 4 = ☐
8
4
64 ÷ ☐ = 8
8
5
3×4=☐
12
6
3×3=☐
9
7
48 ÷ ☐ = 8
6
8
☐ × 7 = 35
5
9
7×9=☐
63
10
5×6=☐
30
Week 38 Session 4
Key Skills Answers
Q
Question
1
728 ÷ 8 = ☐
91
2
10 × 9 − 76
14
3
80% as a fraction
4
56.79 + 9.61
66.4
5
(−10) ÷ (−5)
2
6
If a = 2 b = 2 and c = 1, what is the value of
√(a + b) ?
2
7
(−6) − (−2)
−4
8
Is 7 a factor of 21?
Yes
9
What is the positive value of √144?
10
What is 125% of £210?
Answer
80/100 (=4/5)
12
£262.50
Week 38
Session 4
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Ninja Score to see
which Ninja Belt
you’ve earned
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Week 38 Session 5
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Week 38 Session 5
Mental Strategies Answers
Q
Question
Answer
1
4 + ☐ = 10
6
2
Double 1
2
3
What is half of 49?
24.5
4
111 + 40 = ☐
151
5
27 + 25 = ☐
52
6
3 + 10 = 3 + 7 + ☐
3
7
4 + 304 = ☐
8
29 + 47 = 29 + 40 + ☐
9
Draw hands on the clock face showing 5:40
pm
10
What is 6:47 am in 24 hour clock format?
308
7
See above
06:47
Week 38 Session 5
Timestables Answers
Q
Question
Answer
1
9×2=☐
18
2
☐÷7=6
42
3
12 ÷ 4 = ☐
3
4
8×8=☐
64
5
3 × ☐ = 15
5
6
24 ÷ ☐ = 8
3
7
☐ × 9 = 54
6
8
5×9=☐
45
9
56 ÷ 7 = ☐
8
10
☐ × 3 = 15
5
Week 38 Session 5
Key Skills Answers
Q
Question
1
285 ÷ 5 = ☐
57
2
93 − 15 ÷ 5
90
3
8/10 = ☐ %
80
4
1.28 + 74.41
75.69
5
(−81) ÷ 9
−9
6
If a = 6 b = 3 and c = 5, what is the value of
5a − bc ?
15
7
6 − (−7)
13
8
What is the highest common factor of 21 and 15?
3
9
What is the value of 3²?
9
10
What is 80% of £230?
Answer
184
Week 38
Session 5
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Ninja Score to see
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Week 39 Session 1
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Week 39 Session 1
Mental Strategies Answers
Q
Question
Answer
1
20 = ☐ + 13
2
Double 60
120
3
93 + 10 = ☐
103
4
84 − 40 = ☐
44
5
4=2+☐
2
6
55 − 6 = 55 − 5 − ☐
1
7
☐×2=2+2+2+2
4
8
71 + 49 = 71 + 40 + ☐
9
9
Draw hands on the clock face showing 9:35
am
See above
10
What time will it be 59 minutes after 21:04?
22:03
7
Week 39 Session 1
Timestables Answers
Q
Question
Answer
1
☐÷3=6
18
2
☐÷4=6
24
3
☐÷8=9
72
4
☐÷9=4
36
5
10 × 9 = ☐
90
6
16 ÷ 8 = ☐
2
7
30 ÷ ☐ = 10
3
8
3 × ☐ = 27
9
9
5×6=☐
30
10
☐÷3=7
21
Week 39 Session 1
Key Skills Answers
Q
Question
1
3196 + 5041
2
2² + 1 × 3
3
1.08 × 1000
1080
4
49 − 2.85
46.15
5
Simplify 9/30
3/10
6
(−8) + 1
−7
7
Value of the dot
8
8
Is 32 a multiple of 8?
9
What is the value of 4³?
64
10
3/2 = 24/☐
16
Answer
8237
7
Yes
Week 39
Session 1
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Week 39 Session 2
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Week 39 Session 2
Mental Strategies Answers
Q
Question
Answer
1
☐ + 11 = 20
2
Double 66
132
3
141 + 10 = ☐
151
4
154 − 90 = ☐
64
5
3=2+☐
1
6
38 − 9 = 38 − 8 − ☐
1
7
9+9=☐×9
2
8
81 + 47 = 80 + 40 + ☐
8
9
What time is shown on the clock?
10
What time was it 17 minutes before 10:41
am?
9
12:45 pm
10:24
Week 39 Session 2
Timestables Answers
Q
Question
Answer
1
3 × 10 = ☐
30
2
4 × ☐ = 12
3
3
☐ × 7 = 56
8
4
☐ × 8 = 72
9
5
☐ ÷ 10 = 2
20
6
8 × ☐ = 32
4
7
☐ × 7 = 21
3
8
☐ × 10 = 30
3
9
☐÷5=2
10
10
☐ × 5 = 15
3
Week 39 Session 2
Key Skills Answers
Q
Question
1
1976 + 1635
2
(5 − 4)² + 3 × 2
3
72.382 × 100
7238.2
4
80.39 − 24.03
56.36
5
Write 18/27 in its simplest form
2/3
6
Difference between −5 and 8
13
7
Value of the dot
12.5
8
Is 46 a multiple of 6?
No
9
What is the value of 10 cubed?
10
1/9 = 9/☐
Answer
3611
7
1000
81
Week 39
Session 2
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Week 39 Session 3
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Week 39 Session 3
Mental Strategies Answers
Q
Question
Answer
1
3 + ☐ = 20
17
2
What is double 38?
76
3
54 + 10 = ☐
64
4
67 − 50 = ☐
17
5
7=3+☐
4
6
54 − 10 = 54 − 4 − ☐
6
7
☐×7=7+7+7+7+7
5
8
76 + 84 = 76 + 80 + ☐
4
9
What time is shown on the clock?
12:50 am
10
What time was it 48 minutes before 4:17
pm?
3:28 pm
Week 39 Session 3
Timestables Answers
Q
Question
Answer
1
☐÷3=5
15
2
36 ÷ 4 = ☐
9
3
16 ÷ 8 = ☐
2
4
54 ÷ 9 = ☐
6
5
10 × 7 = ☐
70
6
48 ÷ ☐ = 6
8
7
30 ÷ 3 = ☐
10
8
3×☐=6
2
9
5×7=☐
35
10
3×☐=9
3
Week 39 Session 3
Key Skills Answers
Q
Question
Answer
1
9346 + 7756
17 102
2
(33 − 3) ÷ 5
6
3
6.68 × 100
668
4
58.5 − 46.28
5
Write 6/42 in its simplest form
1/7
6
(−10) + 2
−8
7
Value of the dot
65
8
Is 26 a multiple of 9?
No
9
What is the value of (−2) cubed?
−8
10
9/1 = 36/☐
4
12.22
Week 39
Session 3
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Week 39 Session 4
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Week 39 Session 4
Mental Strategies Answers
Q
Question
1
☐ + 19 = 20
1
2
Double 18
36
3
191 + 10 = ☐
201
4
104 − 30 = ☐
74
5
8=4+☐
4
6
25 − 6 = 25 − 5 − ☐
1
7
5+5+5+5+5=☐×5
5
8
16 + 74 = 16 + 70 + ☐
4
9
Draw hands on the clock face showing
10:40 pm
10
What time was it 13 minutes before 9:41 pm?
Answer
See above
9:28 pm
Week 39 Session 4
Timestables Answers
Q
Question
Answer
1
☐÷3=6
18
2
4 × ☐ = 12
3
3
☐÷8=8
64
4
9 × 10 = ☐
90
5
70 ÷ 10 = ☐
7
6
80 ÷ ☐ = 10
8
7
☐÷3=8
24
8
12 ÷ ☐ = 4
3
9
5 × 10 = ☐
50
10
3×5=☐
15
Week 39 Session 4
Key Skills Answers
Q
Question
Answer
1
591 + 9329
9920
2
(27 − 3) ÷ 8
3
3
10 × 0.31
3.1
4
99.78 − 96.05
3.73
5
Write 18/60 in its simplest form
3/10
6
Difference between −3 and −1
2
7
Value of the dot
6
8
Is 16 a multiple of 7?
9
What is the value of 2 cubed?
8
10
8/3 = ☐/12
32
No
Week 39
Session 4
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Week 39 Session 5
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Week 39 Session 5
Mental Strategies Answers
Q
Question
Answer
1
20 = 5 + ☐
15
2
Double 68
138
3
167 + 10 = ☐
177
4
119 − 50 = ☐
69
5
5=1+☐
4
6
87 − 11 = 87 − 7 − ☐
4
7
☐×4=4+4+4
3
8
88 + 26 = 80 + 20 + ☐
14
9
Draw hands on the clock face showing 6:55
pm
See above
10
From 14:38, how many minutes until 15:26?
48
Week 39 Session 5
Timestables Answers
Q
Question
Answer
1
3 × ☐ = 18
6
2
4 × ☐ = 12
3
3
72 ÷ ☐ = 9
8
4
81 ÷ 9 = ☐
9
5
90 ÷ ☐ = 9
10
6
72 ÷ 8 = ☐
9
7
6÷☐=2
3
8
3 × ☐ = 21
7
9
10 ÷ ☐ = 2
5
10
☐ × 8 = 24
3
Week 39 Session 5
Key Skills Answers
Q
Question
Answer
1
529 + 9072
9601
2
(4 + 66) ÷ 10
7
3
1000 × 0.33
330
4
11 − 8.32
2.68
5
Write 10/50 in its simplest form
1/5
6
1−5
−4
7
Value of the dot
6
8
What is the lowest common multiple of 7
and 8?
56
9
What is the value of ∛125?
5
10
10/5 = ☐/25
50
Week 39
Session 5
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Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 40 Session 1
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Week 40 Session 1
Mental Strategies Answers
Q
Question
Answer
1
5=1+☐
4
2
100 = ☐ + 49
51
3
Halve 3
1.5
4
185 − 10 = ☐
175
5
169 + ☐ = 170
1
6
43 = 20 + ☐
23
7
7191 − 7184 = ☐
7
8
7 × 6 = 42, so 42 ÷ 6 = ☐
7
9
What is 5:00 am in 24 hour clock format?
05:00
10
What time was it 45 minutes before 10:57
pm?
10:12 pm
Week 40 Session 1
Timestables Answers
Q
Question
Answer
1
16 ÷ ☐ = 8
3
2
12 ÷ ☐ = 3
4
3
12 ÷ 2 = ☐
6
4
4×3=☐
12
5
6÷2=☐
3
6
☐×3=9
3
7
20 ÷ ☐ = 4
5
8
6 × ☐ = 24
4
9
9÷☐=3
3
10
6×5=☐
30
Week 40 Session 1
Key Skills Answers
Q
Question
Answer
1
896 × 26 = ☐
23 296
2
19443 − 9941
9502
Seventy nine million, eight
hundred and eighty one
thousand, eight hundred and
ninety nine
3
Write 79881899 in words
4
35.71 ÷ 100
5
(−5) × 5
−25
6
Round 2.5146 to 1 decimal place
2.5
7
(−9) + (−7)
−16
8
Round 3535 to 1 s.f.
4000
9
What is the letter at (−1,−2)?
W
10
What is 1/2 of 14?
7
0.3571
Week 40
Session 1
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 40 Session 2
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Week 40 Session 2
Mental Strategies Answers
Q
Question
Answer
1
4+☐=5
1
2
100 = 47 + ☐
53
3
What is half of 7?
3.5
4
190 − 10 = ☐
180
5
91 + ☐ = 100
9
6
75 = 10 + ☐
65
7
833 − 826 = ☐
7
8
6 × 7 = 42, so 42 ÷ 7 = ☐
6
9
What is 3:52 am in 24 hour clock format?
03:52
10
What time was it 50 minutes before 08:15?
07:25
Week 40 Session 2
Timestables Answers
Q
Question
Answer
1
☐ × 5 = 10
2
2
4 × 10 = ☐
40
3
8÷2=☐
4
4
☐÷4=9
36
5
☐ × 9 = 18
2
6
☐÷3=7
21
7
5 × 10 = ☐
50
8
☐ × 8 = 48
6
9
3×☐=9
3
10
30 ÷ ☐ = 5
6
Week 40 Session 2
Key Skills Answers
Q
Question
1
98 × 25 = ☐
2450
2
17471 − 8900
8571
3
Write Six Million, Six Hundred and Nine Thousand, Seven
Hundred and Twenty Three in digits
4
65 ÷ 100
0.65
5
9 × (−9)
−81
6
Round 0.9032 to 2 decimal places
0.90
7
(−9) + (−6)
−15
8
Round 723 to 2 s.f.
720
9
What is the letter at (−2,2)?
A
10
What is 4/7 of 14?
8
Answer
6 609 723
Week 40
Session 2
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 40 Session 3
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Week 40 Session 3
Mental Strategies Answers
Q
Question
Answer
1
☐+4=5
1
2
100 = 26 + ☐
74
3
What is half of 2?
1
4
49 − 10 = ☐
39
5
174 + ☐ = 180
6
6
198 = 68 + ☐
130
7
5875 − 5869 = ☐
6
8
1 × 9 = 9, so 9 ÷ 1 = ☐
9
9
What is 19:26 in 12 hour clock format?
10
From 2:40 pm, how many minutes until 2:55
pm?
7:26 pm
15
Week 40 Session 3
Timestables Answers
Q
Question
Answer
1
2×8=☐
16
2
12 ÷ 4 = ☐
3
3
☐ × 10 = 20
2
4
☐ × 6 = 24
4
5
☐ × 5 = 10
2
6
27 ÷ ☐ = 9
3
7
5 × ☐ = 45
9
8
6 × ☐ = 36
6
9
24 ÷ ☐ = 8
3
10
54 ÷ ☐ = 9
6
Week 40 Session 3
Key Skills Answers
Q
Question
1
77 × 44 = ☐
3388
2
1275 − 639
636
Answer
Ninety four thousand,
three hundred and sixty
eight
3
Write 94368 in words
4
7.577 ÷ 1000
5
(−8) × (−3)
6
Round 0.3556 to 3 decimal places
7
(−9) + (−9)
−18
8
Round 41 to 1 s.f.
40
9
What is the letter at (−1,−1)?
R
10
What is 5/6 of 12?
10
0.007577
24
0.356
Week 40
Session 3
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 40 Session 4
Get your Skill Books ready…
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Week 40 Session 4
Mental Strategies Answers
Q
Question
Answer
1
☐+4=5
1
2
100 = 45 + ☐
55
3
What is half of 3?
1.5
4
155 − 10 = ☐
145
5
159 + ☐ = 160
1
6
133 = 110 + ☐
23
7
8329 − 8321 = ☐
8
8
5 × 8 = 40, so 40 ÷ 5 = ☐
8
9
What is 10:21 pm in 24 hour clock format?
10
From 2:48 pm, how many minutes until 3:01
pm?
22:21
13
Week 40 Session 4
Timestables Answers
Q
Question
Answer
1
10 ÷ ☐ = 5
2
2
8÷☐=2
4
3
2×7=☐
14
4
☐÷4=9
36
5
8÷☐=4
2
6
☐ × 10 = 30
3
7
☐ × 5 = 25
5
8
6×4=☐
24
9
3×☐=6
2
10
☐ × 9 = 54
6
Week 40 Session 4
Key Skills Answers
Q
Question
Answer
1
486 × 54 = ☐
26 244
2
11320 − 6970
4350
3
Write Ninety Nine Thousand, Eight Hundred
and Thirty Eight in digits
99 838
4
4.18 ÷ 1000
0.00418
5
(−3) × (−7)
21
6
Round 67.3899 to 1 decimal place
7
(−2) + (−1)
−3
8
Round 6.821 to 2 s.f.
6.8
9
What is the letter at (2,2)?
E
10
What is 1/3 of 12?
4
67.4
Week 40
Session 4
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!
Week 40 Session 5
Get your Skill Books ready…
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Week 40 Session 5
Mental Strategies Answers
Q
Question
Answer
1
5=☐+3
2
2
100 = ☐ + 36
64
3
What is half of 4?
2
4
150 − 10 = ☐
140
5
174 + ☐ = 180
6
6
185 = 25 + ☐
160
7
923 − 916 = ☐
7
8
7 × 6 = 42, so 42 ÷ 6 = ☐
7
9
What is 05:52 in 12 hour clock format?
10
13:15 is how many minutes after 12:27?
5:52 am
48
Week 40 Session 5
Timestables Answers
Q
Question
Answer
1
☐÷2=8
16
2
☐ × 7 = 28
4
3
☐ ÷ 2 = 10
20
4
20 ÷ ☐ = 5
4
5
☐÷2=7
14
6
☐ × 4 = 12
3
7
35 ÷ ☐ = 7
5
8
☐ × 7 = 42
6
9
3×2=☐
6
10
54 ÷ ☐ = 9
6
Week 40 Session 5
Key Skills Answers
Q
Question
Answer
1
709 × 47 = ☐
33 323
2
13951 − 7601
6350
Six hundred and two
thousand, four hundred
and seventy one
3
Write 602471 in words
4
269.44 ÷ 100
5
(−8) × (−1)
6
Round 3.7717 to 2 decimal places
3.77
7
(−4) + (−7)
−11
8
Round 0.002138 to 2 s.f.
0.0021
9
What is the letter at (2,0)?
P
10
What is 4/9 of 45?
20
2.6944
8
Week 40
Session 5
Calculate your
Ninja Score to see
which Ninja Belt
you’ve earned
today!