Cambridge Primary Ready to Go Lessons for
Maths Stage 2
Answers to photocopiable pages
Unit 1A: Number and
problem solving
g)
52
61 62 63
Page 9: Number lines
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 11: Lots of straws
The learners do the activity as explained on the
photocopiable page.
Page 13: Hundred square and
0 to 9 digit cards
72
2. Answers will vary, but should be similar to
question 1.
Page 16: Space counting
The learners do the activity as explained on the
photocopiable page.
Page 18: Round it!
1. a) 40
c) 10
Page 14: More and less
67
70
100
c) 10
d) 70
33
56 57 58
20
b) 90
13
47
14
2. a) 40
22 23 24
c)
90
e) 90 91
15 16 17
b)
88
d) 60
6
26
50
b) 80
The learners do the activity as explained on page
12 under ‘Main activities’.
1. a)
43
3.
e) 90
70
20
77
25
80
30
67
d)
Page 20: Ordering
75
84 85 86
e)
95
Page 22: Odd or even
61
The learners do the activity as explained on the
photocopiable page.
70 71 72
81
f)
The learners do the activities as explained on the
photocopiable page.
39
Page 24: Making 20 game
The learners do the activity as explained on the
photocopiable page.
48 49 50
59
1
9781444177596 RTG Maths 2 answers.indd 1
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 26: Piles of money!
1.
Pile 1
1
2
3
4
5
6
7
8
9
4×3
Pile 2
9
8
7
6
5
4
3
2
1
4+4+4
Answer = 12
5×5
5+5+5+5+5
Answer = 25
3×8
2. Pile 1: 1
Pile 2: 9
Or the other way around.
Page 28: Place value cards
The learners do the activity as explained on page
27 under ‘Main activities’.
Page 30: Partition those
numbers!
30 + 17
20 + 27
Answer = 24
2. Answers will vary, but should be similar to
question 1.
Page 40: Hooray arrays!
Answers will vary, for example: 47
40 + 7
3+3+3+3+3+3+3+3
2
2×7
10 + 37
Page 32: 2s, 5s and 10s game
The learners do the activity as explained on the
photocopiable page.
7
Page 34: Adding lots of numbers
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 36: Adding and taking
away
14
5×8
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
5
8
Page 38: Adding and adding
again
1.
40
2×6
4×5
4
2+2+2+2+2+2
Answer = 12
2×8
5
2+2+2+2+2+2+2+2
Answer = 16
20
2
9781444177596 RTG Maths 2 answers.indd 2
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
3 × 10
Unit 1B: Geometry and
problem solving
3
Page 44: Shape information
Shape name: cube
10
Drawing of one face:
Number of faces: 6
Number of edges: 12
Number of corners: 8
30
7 × 10
What shape is it?
square
Shape name: cuboid
7
Drawing of one face:
Number of faces: 6
Number of edges: 12
Number of corners: 8
10
What shape is it?
rectangle / square
Shape name: pyramid
70
Number of faces: 5
2
Number of corners: 5
2×8
Drawing of one face:
Number of edges: 8
What shape is it?
triangle / square
Shape name: cylinder
8
Drawing of one face:
Number of faces: 3
Number of edges: 2
Number of corners: 0
16
What shape is it?
circle / rectangle
Page 42: Numbers
1. Ensure numbers are in the correct order and
roughly in the correct position on the number
line:
25
35
50
60
75
Page 46: Spot the shapes
1.
97
2. Any two from:
a) 70 + 6 60 + 16 50 + 26 40 + 36 30 + 46
20 + 56 10 + 66
b) 40 + 5 30 + 15 20 + 25 10 + 35
c) 20 + 8 10 + 18
3. 8, 10, 12, 14, 16, 18, 20
4. 20, 30, 100
5. 0 + 5
1+4
6. $31
2+3
3+2
4+1
5+0
2. 5
3. Answers will vary, but should be similar to
question 1.
7. 14 toys
3
9781444177596 RTG Maths 2 answers.indd 3
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 48: Sort them
Eight corners
Circular faces
No circular faces
Not eight corners
Page 50: 2D shapes
All flat faces
Not all flat faces
The learners do the activity as explained on pages
49 and 51 under ‘Main activities’.
Page 52: Symmetrical patterns
a)
line of symmetry
b)
c)
At least one square
face
No square faces
d)
Page 54: Things to do with shape
1. a) Name: cube
Number of faces: 6
Number of edges: 12
Number of corners: 8
b) Name: cuboid
Number of faces: 6
Number of edges: 12
Number of corners: 8
4
9781444177596 RTG Maths 2 answers.indd 4
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
c) Name: pyramid
Number of faces: 5
Number of edges: 8
Page 66: Telling the time
1. a)
11
b)
1
10
Number of corners: 5
Number of edges: 0
c)
11
6
12
d)
1
e)
11
12
Unit 1C: Measure and
problem solving
Page 56: Lots of coins
Answers will vary, for example: 15 cents can be
exchanged for three 5c coins; 20 cents can be
exchanged for two 10c coins.
Page 58: Money problems
1. a) 5c
8
11
8
d) 7:30
12
1
2
9
3
8
4
2. a) 3:00
6
5
10
3
6
4
f)
1
2
7
2
7
9
1
3
5
10
12
9
4
6
6
5
10
3
7
4
11
2
8
line of symmetry
8
7
9
3.
2
3
5
10
1
9
4
7
12
10
3
8
Number of faces: 1
11
2
9
d) Name: sphere
Number of corners: 0
b)
c)
2. a)
12
4
7
5
b) 11:30
c) 9:00
e) 1:00
f) 5:30
6
5
3. Answers will vary, but should be similar to
questions 1 and 2.
Page 68: Time vocabulary cards
The learners do the activities as explained on page
67 under ‘Main activities’.
Page 70: Lots of measuring!
b) Answers will vary, for example:
2 × 10c coins and 1 × 5c coin
1. 95c; for example: 9 × 10c coins and 1 × 5c
coin
c) 20c
2. 5c
d) $1.20; answers will vary, for example:
1 × $1 coin and 2 × 10c coins
3. centimetres
2. Answers will vary, but should be similar to
question 1.
Page 60: Measures vocabulary
cards
The learners do the activity as explained on page
59 under ‘Main activities’.
Page 62: Practical measuring
The learners do the activities as explained on the
photocopiable page.
Page 64: Time investigations
The learners do the activities as explained on the
photocopiable page.
metres
kilometres
4. 300 g
5. Freddie
6. Ensure the learners draw a line 10 cm long.
7.
12
11
1
10
2
9
3
8
11:30
4
7
6
5
Unit 2A: Number and
problem solving
Page 72: Counting dots
4. Groups of 10: 6
60 + 2 = 62
Single circles: 2
5
9781444177596 RTG Maths 2 answers.indd 5
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 74: Twos, fives and tens
Page 93: Addition
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 76: Multiples
Page 95: Finding the difference
1. Answers will vary, for example: 2, 4, 6, 8, 10,
12, 14, 16, 18, 20, 22, 24, 26, 28, 30
2. Answers will vary, for example: 5, 10, 15, 20,
25, 30, 35, 40, 45, 50, 55, 60
3. Answers will vary, for example: 10, 20, 30, 40,
50, 60, 70, 80, 90, 100
Page 78: Partitioning
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 97: Which way is best?
Answers will vary, for example:
Counting on:
37 – 21: 21 + 9 + 7
9 + 7 = 16
2. 46: 40 + 6 = 46
37: 30 + 7 = 37
Counting back:
53: 50 + 3 = 53
98: 90 + 8 = 98
48 – 26: 48 – 20 – 6 = 22
75: 70 + 5 = 75
3. 37
46
53
75
98
4. Answers will vary, but should be similar to
question 2.
Page 80: Greater or less?
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 81: 1 to 50 number cards
The learners do the activities as explained on page
79 under ‘Main activities’.
Page 99: Ways to add, ways to
subtract
Answers will vary, for example:
Numbers chosen: 26 and 57
Addition:
26 + 57: 26 + 50 + 7 = 76 + 7 = 83
Subtraction:
57 – 26: 57 – 20 – 6 = 31
Page 101: Arrays
1. a) 3 × 5 = 15
5 × 3 = 15
b) 8 × 3 = 24
3 × 8 = 24
Page 83: How many shapes?
c) 8 × 2 = 16
2 × 8 = 16
squares: 21
d) 4 × 4 = 16
4 × 4 = 16
e) 7 × 3 = 21
3 × 7 = 21
circles: 23
triangles: 10
Page 85: Sorting numbers
Answers will vary, for example:
Even numbers: 8, 12, 24, 26
2. Answers will vary, but should be similar to
question 1.
Page 103: Grouping
Odd numbers: 5, 7, 23, 31
Page 87: Doubling game
1. a) How many groups? 3
Number sentence: 15 ÷ 5 = 3
The learners do the activity as explained on the
photocopiable page.
b) How many groups? 7
Number sentence: 14 ÷ 2 = 7
Page 89: Adding and subtracting
c) How many groups? 5
Number sentence: 20 ÷ 4 = 5
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 91: Ten more, ten less
1. a) 33
b) 67
c) 94
d) 71
2. a) 85
b) 38
c) 6
d) 22
3. a) 37
b) 48
c) 56
d) 74
4. a) 61
b) 14
c) 53
d) 32
5. 72
6. 27
d) How many groups? 8
Number sentence: 24 ÷ 3 = 8
2. Answers will vary, but should be similar to
question 1.
Page 105: Opposites!
1. Jumps of 2 to 12 and back.
2 × 6 = 12
12 ÷ 2 = 6
2. Jumps of 5 to 25 and back.
5 × 5 = 25
25 ÷ 5 = 5
3. Jumps of 2 to 16 and back.
2 × 8 = 16
16 ÷ 2 = 8
6
9781444177596 RTG Maths 2 answers.indd 6
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 117: Carroll diagrams
4. Jumps of 3 to 12 and back.
3 × 4 = 12
12 ÷ 3 = 4
Answers will vary, for example:
5. Jumps of 10 to 30 and back.
10 × 3 = 30
30 ÷ 10 = 3
Six faces
Not six faces
6. Jumps of 4 to 20 and back.
4 × 5 = 20
20 ÷ 4 = 5
Page 107: Remainders
Groups
Remainder
1 group of 8
1 group of 7,
remainder 1
1 group of 6,
remainder 2
1 group of 5,
remainder 3
2 groups of 4
2 groups of 3,
remainder 2
4 groups of 2
8 groups of 1
Page 119: Venn diagram
Page 109: More numbers
Multiples of 2
1. 58
2. 50 + 4
40 + 14
30 + 24
20 + 34
10 + 44
2
3. 7, 5, 3, 1
4. 25
45
Multiples of 5
60
12
5. 5
8
6. 30
15
10
25
20
35
Unit 2B: Handling data and
problem solving
Page 111: Favourite vegetables
The learners do the activity as explained on the
photocopiable page.
Page 113: Pictograms
Ensure the learners draw a pictogram showing
the information in the table, with the correct
number of symbols for each hobby. Also ensure
they include a title such as ‘Favourite hobbies’ and
labels ‘Swimming’, ‘Reading’, ‘Football’, ‘Computer
games’, ‘Playing with their pets’ and ‘Tennis’.
Page 115: Block graphs
Ensure the learners draw a block graph showing the
information in the table, with the correct number
of blocks for each flavour. Also ensure they include
a title such as ‘Favourite juice flavours’, labels on
the x axis ‘orange’, ‘banana’, ‘grape’, ‘cherry’ and
‘lemon’ and numbers for each flavour on the y axis.
Page 121: Lots of graphs
1.
Clothes in Zoe’s
cupboard
jackets
jeans
shirts
skirts
Tally
Total
IIII II
III
IIII IIII IIII
IIII
7
3
14
4
2. Ensure the learners draw a pictogram showing
the information in the table, with the correct
number of symbols for each sport.
3.
Even numbers
Not even numbers
10
17
6
3
26
23
38
31
7
9781444177596 RTG Maths 2 answers.indd 7
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Unit 2C: Measure and
problem solving
c)
11
12
d)
1
10
11
2
9
Page 123: Money
Page 124: Changing money
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
Page 126: How much?
6
2
9
4
7
1
10
3
8
The learners do the activities as explained on page
122 under ‘Main activities’.
12
3
8
5
4
7
6
5
Unit 3A: Number and
problem solving
Page 140: Groups of three and
four
Answers will vary, for example:
1. 30
1st pair: car and puppet: $40
2. Ensure the learners draw loops around groups
of three dots.
2nd pair: tractor and scooter: $56
3. 10 groups of 3 = 30
3rd pair: scooter and ball: $37
4. 36
4th pair: puppet and ball: $32
5. Ensure the learners draw loops around groups
of four dots.
Page 128: Measuring lengths
1. a) 5 cm
d) 4 cm
b) 10 cm
e) 8 cm
6. 9 groups of 4 = 36
c) 12 cm
2. Ensure the learners draw lines of the correct
length.
Page 142: Fractions
1.
Page 130: Weighing scales
2.
The learners do the activities as explained on page
129 under ‘Main activities’.
3.
Page 132: Estimating capacities
The learners do the activity as explained on the
photocopiable page.
Page 134: Time me!
The learners do the activity as explained on the
photocopiable page.
Page 146: What are the fractions?
pentagon:
The learners do the activity as explained on the
photocopiable page.
Page 136: Time problems
a) 5:30
b) 2 12 hours
cross:
1
4
rectangle:
rectangle: no
equal fractions
cross:
1
2
pentagon: no
equal fractions
hexagon: no
equal fractions
hexagon: no
triangle: no
equal fractions equal fractions
1
2
1
4
Page 148: Multiples
c) 5:30
1. Tick 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24,
26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48,
50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72,
74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96,
98, 100
d) 12:30
Page 138: More numbers
1. $32
2. $13
3. 3 cm
Page 144: Treasure game
2. Cross 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55,
60, 65, 70, 75, 80, 85, 90, 95, 100
6 cm
3. Circle 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
4. 75 g
5. a)
11
12
b)
11
1
10
3
8
4
7
6
5
4. Multiples of 10 are also multiples of 2 and 5.
1
10
2
9
12
2
9
3
8
4
7
6
5
Page 150: Greater than or less
than?
The learners do the activity as explained on the
photocopiable page; see the photocopiable page for
an example.
8
9781444177596 RTG Maths 2 answers.indd 8
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 152: Adding and taking
away
2. Answers will vary, but should be similar to
question 1.
The learners do the activity as explained on the
photocopiable page, for example:
34 Number chosen: 9 Add: 43 Subtract: 25
Page 154: Problems, problems!
1.
Latifa bakes 26 biscuits. Fowzia bakes
29. How many do they bake altogether?
Ebrahim has 54 football cards. Jassim
has 38. How many do they have
altogether?
Khulood and Maha each have 36
stickers. How many do they have
altogether?
Sultan scores 35 points in his test.
Nasser scores 21 more points. How
many points does Nasser score?
55
92
72
56
2. Answers will vary, but should be similar to
question 1.
Page 156: More problems
1.
Page 162: Grouping
1.
Harry puts 15 building blocks in towers
of five. How many towers does he have?
Suzie makes 24 cakes. She puts them in
boxes of four. How many boxes does she
have?
Paulo has 30 toy cars. He puts them in
groups of ten. How many groups does
he make?
Rosie has 50 buttons. She puts them in
piles of ten. How many piles does she
make?
Sofia bakes 45 bread rolls. She wants to
put them in baskets. Five go in each
basket. How many baskets does she need?
37
10
5
30
5
20
10
60
10
c)
3+4=7
4+3=7
5+2=7
6+1=7
7+0=7
9
70
d)
65
75
60
5
70
5
120
10
140
10
Page 158: Missing numbers
2+5=7
5
35
30
2. Answers will vary, but should be similar to
question 1.
1+6=7
b)
15
26
1. 0 + 7 = 7
3
Page 164: Double that number
$6
16
6
2. Answers will vary, but should be similar to
question 1.
1. a)
Sameer has $32. He spends $26 on a
toy. How much does he have left?
Jameela bakes 50 cakes. She gives 13 to
her sister. How many does she have left?
Mansoor has 24 stickers. He needs 50
to fill his sticker book. How many
more does he need?
Hessa has 9 braids. She needs 25 for her
hair. How many more does she need?
3
150
130
e)
f)
55
85
2. Answers will vary, for example: 10 – 5 = 5
11 – 6 = 5
12 – 7 = 5
13 – 8 = 5
14 – 9 = 5
15 – 10 = 5
16 – 11 = 5
17 – 12 = 5
18 – 13 = 5
19 – 14 = 5
3. a) 8
b) 12
c) 27
d) 18
e) 32
Page 160: Number patterns
1. a) 18
20
22
b) 25
20
15
c) 10
30
50
d) 28
24
20
e) 100
70
60
f) 20
28
32
36
g) 18
27
30
36
h) 28
24
20
16
50
5
80
5
100
10
160
10
f) 56
110
170
2. Answers will vary, but should be similar to
question 1.
Page 166: All about numbers
70
1. a) 12
2.
b) 4
c) 6
40
9
9781444177596 RTG Maths 2 answers.indd 9
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 176: More shape and space
3. a) Any number greater than 23.
b) Any number greater than 43.
c) Any number less than 10.
4. $45
5. 18
6. 6
1. Answers will vary, for example:
2. Answers will vary, for example:
Unit 3B: Geometry and
problem solving
Page 168: Properties of shapes
3. a) 4
Name: cylinder
4.
b) 6
c) 8
circle
curved surface
edge
Name: cone
5. clockwise
anticlockwise
quarter turn
Unit 3C: Measure and
problem solving
curved surface
edge
circle
Name: cuboid
vertex
line of symmetry
rectangular face
Page 178: Ways to pay
Answers will vary, for example:
1. 2 × 10c coins
2. 4 × 10c coins and 1 × 5c coin
3. 7 × 10c coins and 1 × 5c coin
4. 8 × 10c coins
square face
Page 180: Shopping
edge
Answers will vary, for example:
Page 170: Name the shape!
a) rectangle
b) triangle (regular)
c) pentagon (regular)
d) square (regular)
e) hexagon (regular)
f) hexagon
g) pentagon
h) triangle
i) octagon (regular)
j) octagon
Page 172: Symmetrical patterns
The learners do the activity as explained on the
photocopiable page.
Page 174: Pirates ahoy
Up 2 squares
Right 6 squares
Down 1 square
Right 1 square
Down 5 squares
5. 10 × 10c coins
Windmill and marble run; Total: $21;
How much do you have left?: $29
Jack-in-a-box and spinning top; Total: $39;
How much do you have left?: $11
Spinning top and garage; Total: $42;
How much do you have left?: $8
Page 182: About how long?
The learners do the activity as explained on the
photocopiable page.
Page 184: About how heavy?
The learners do the activity as explained on the
photocopiable page.
Page 186: About how much?
The learners do the activity as explained on the
photocopiable page.
10
9781444177596 RTG Maths 2 answers.indd 10
1/28/14 7:50 PM
Cambridge Primary Ready to Go Lessons for Maths Stage 2: Answers to photocopiable pages
Page 188: Time investigation
Page 192: More about measures
The learners do the activity as explained on the
photocopiable page.
1. $4
Page 190: Time problems
3. 850 g
Problem
Charlie went to
play with his
friend. He left
home at half
past six. He
stayed with his
friend for three
hours.
When did he
go home?
Sameera read
her book for 1 12
hours. She
finished
reading at 5:00.
When did she
begin?
Sammy went
swimming at
half past seven.
She swam for
2 12 hours.
When did she
finish
swimming?
Yaseen played
football with
his friends for
three hours. He
finished
playing at 4:30.
When did he
begin?
Jamal went
shopping with
his family.
They left home
at 5:30 and got
back 2 12 hours
later.
What time did
they get home?
Digital
time
Clock
2. $6
4. metres
5. a)
centimetres
11
12
1
10
11
12
9
1
10
8
2
9
3
8
6
b)
11
5
6
12
10
10:30
3
2:00
3
9:30
2
4
7
1
3
1
10
8
12
5:00
5
9
11
3
4
7
9:30
4
7
2
6
5
2
9
3
8
3:30
c)
11
4
7
6
12
1
10
5
2
9
8
11
12
1
10
4
7
6
5
2
9
3
8
10:00
d)
11
6
1
10
4
7
12
5
2
9
8
4
7
11
12
6
5
1
10
2
9
8
3
1:30
3
8:00
4
7
11
6
12
5
1
10
2
9
8
4
7
6
5
11
9781444177596 RTG Maths 2 answers.indd 11
1/28/14 7:50 PM