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GCSE U1.4 Factors and Multiples

Total questions: 18

Worksheet time: 1hrs 9mins

Name
Class
Date
1.

20,21,22,23,24,25,26,27,28,29,30

Which of this numbers are

a)

Multiples of 2

1.

20, 22, 24, 26, 28, 30

b)

Multiples of 3

2.

21, 24, 27, 30

c)

Multiples of 5

3.

20, 25, 30

d)

Multiples of 7

4.

21,28

e)

Multiples of 11

5.

22

2.

List the prime numbers between 30 and 40

(a)  

3.

List the prime numbers between 40 and 50

(a)  

4.

Find the HCF

a)

30 and 45

1.

15

b)

30 and 6

2.

6

c)

30 and 60

3.

30

d)

5 and 6

4.

1

5.

Which of the following is a factor of 12? Select all that apply.

a)

12

b)

2

c)

24

d)

3

6.

Select all of the multiples of 8.

a)

2

b)

8

c)

32

d)

4

7.

Select all of the prime numbers.

a)

3

b)

9

c)

29

d)

2

8.

Select all of the square numbers.

a)

9

b)

16

c)

24

d)

100

9.

What are the factors of 15?

a)

1, 2, 3, 5, 15

b)

1, 3, 5, 15

c)

1, 2, 3, 4, 5

d)

1, 5, 10, 15

10.

What are the factors of 24?

a)

1, 2, 3, 4, 5, 6, 7, 8, 24

b)

1, 3, 4, 6, 8, 10, 24

c)

1, 2, 3, 4, 6, 8, 12, 24

d)

1, 2, 4, 8, 12, 24

11.

What are the first five multiples of 3?

a)

6, 9, 15, 18, 21

b)

3, 6, 9, 12, 18

c)

3, 6, 9, 15, 18

d)

3, 6, 9, 12, 15

12.
A prime number is...
a)
a number that has only one factor.
b)
a number that has at least two factors.
c)
a number that has more than two factors.
d)
a number that has only two factors.
(1 and itself)
13.
Find the HCF of 12 and 15 ?
a)
2
b)
2 x 3
c)
3
d)
60
14.
Find the HCF of 40 and 60?
a)
10
b)
20
c)
30
d)
None of the above
15.
What is the LCM of 6 and 8 ?
a)
12
b)
18
c)
24
d)
36
16.
What is the LCM of 4 and 12? 
a)
4
b)
8
c)
12
d)
16
17.

HCF and LCM of 20 and 14 are...

a)

2 dan 140

b)

2 dan 70

c)

3 dan 140

d)

3 dan 70

18.
Find the HCF of 25 and 35
a)
10
b)
5
c)
7
d)
1