1
1
Write the number two million eight hundred and forty thousand three hundred and twenty-seven in figures.
......................................................... [1]
[Total: 1]
2
Write down a common multiple of 18 and 24.
......................................................... [1]
[Total: 1]
3
Write down an irrational number with a value between 10 and 20.
...................................................
[1]
[Total: 1]
4
Find the lowest common multiple (LCM) of 24 and 28.
...................................................
[2]
[Total: 2]
5
61
62
63
64
65
66
67
68
69
From the list of numbers, write down
(a) a square number,
...................................................
[1]
2
(b) a multiple of 13,
...................................................
[1]
...................................................
[1]
...................................................
[2]
(c) a factor of 186,
(d) the prime numbers.
[Total: 5]
6
Write the number six hundred and seven thousand five hundred and thirty-two in figures.
...................................................
[1]
[Total: 1]
7
Write the number one hundred and three thousand eight hundred and six in figures.
...................................................
[1]
[Total: 1]
8
Two of the numbers in this list are irrational.
Put a ring around each of these irrational numbers.
[1]
[Total: 1]
9
Find the lowest common multiple (LCM) of 32 and 40.
...................................................
[2]
3
[Total: 2]
10
Write down a prime number between 30 and 40.
...................................................
[1]
[Total: 1]
11
Write 180 as a product of its prime factors.
...................................................
[2]
[Total: 2]
12
Find the highest common factor (HCF) of
and
.
...................................................
[2]
[Total: 2]
13
f is a common factor of 14 and 28.
m is a common multiple of 10 and 25.
p is a prime number.
Work out the largest possible value of
.
................................................. [4]
[Total: 4]
4
14
Find the reciprocal of 8.
...................................................
[1]
[Total: 1]
15
Write the number six and a half million in figures.
...................................................
[1]
[Total: 1]
16
9 16
18 29 57 64 87 96
From this list of numbers, write down
(a) a factor of 48,
...................................................
[1]
...................................................
[1]
...................................................
[1]
(b) a cube number,
(c) a prime number.
[Total: 3]
17
(a) Write 180 as a product of its prime factors.
...................................................
[2]
5
17
(b) Find the lowest common multiple (LCM) of 160 and 180.
...................................................
[2]
[Total: 4]
18
Write down the reciprocal of
.
...................................................
[1]
[Total: 1]
19
Find the lowest common multiple (LCM) of 30 and 75.
...................................................
[2]
[Total: 2]
20
Write the number sixteen thousand and thirty-seven in figures.
...................................................
[1]
[Total: 1]
21
Write down the six factors of 28.
.................... , .................... , .................... , .................... , .................... , .................... [2]
[Total: 2]
6
22
Write down the reciprocal of
.
...................................................
[1]
[Total: 1]
23
Udita thinks of two whole numbers.
Both numbers are greater than 6.
The lowest common multiple (LCM) of the two numbers is 90.
The highest common factor (HCF) of the two numbers is 6.
Find the two numbers.
.............................. and .............................. [2]
[Total: 2]
24
A company makes 40 600 headphones in one year.
Write this number
(a) in words,
.......................................................................................................
[1]
...................................................
[1]
(b) in standard form.
[Total: 2]
25
Complete the statement.
A prime number between 90 and 100 is .................................
[1]
[Total: 1]
7
26
12
18
29
49
91
125
From the list of numbers, write down a prime number.
........................................
[1]
[Total: 1]
27
Work out the lowest common multiple (LCM) of 24 and 54.
........................................
[2]
[Total: 2]
28
Write down the reciprocal of
.
........................................
[1]
[Total: 1]
29
Write down an irrational number, n, where
31 < n < 32.
n = .................................. [1]
[Total: 1]
30
Write down all the factors of 42.
..................................................................................................................................................................
[2]
[Total: 2]
31
0.6
8
From this list, write down an irrational number.
........................................
[1]
8
[Total: 1]
32
12
18
29
49
91
125
From the list of numbers, write down a cube number.
........................................
[1]
[Total: 1]
33
Complete the statement.
The reciprocal of 0.2 is ..........................
[1]
[Total: 1]
34
The times on two clocks are checked regularly.
One clock is checked every 6 days.
The other clock is checked every 8 days.
Both clocks are checked on 1st January 2021.
Find the number of days during 2021 when both clocks will be checked on the same day.
[There are 365 days in 2021.]
...................................................
[4]
[Total: 4]
35
Meg says that an even number cannot be a prime number.
Is she correct?
Give a reason for your answer.
.............................. because ................................................................................................................. [1]
[Total: 1]
9
36
Find the lowest common multiple (LCM) of 18 and 21.
...................................................
[2]
[Total: 2]
37
Write down a multiple of 9 between 100 and 110.
...................................................
[1]
[Total: 1]
38
Find the highest common factor (HCF) of 36 and 84.
...................................................
[2]
[Total: 2]
39
Write down the reciprocal of 10.
...................................................
[1]
[Total: 1]
40
Write in figures the number fifty-three thousand and thirty-five.
...................................................
[1]
[Total: 1]