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Y5 factor, multiple, prime and composite

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

3 is a factor of 27

a)

True

b)

False

2.

6 is a multiple of 12

a)

True

b)

False

3.

15 is a prime number

a)

True

b)

False

4.

33 is a composite number

a)

True

b)

False

5.

The prime factor of 20 are 1,2, and 5

a)

True

b)

False

6.

Prime factor of 10 are 2 and 5

a)

True

b)

False

7.

Multiple of 7 are . . . .

a)

7, 14, 20, 28, 25, . . .

b)

7, 13, 21, 28, 35, . . .

c)

7, 14, 21, 28, 35, . . .

d)

7, 14, 20, 27, 35, . . .

8.

The multiples of 6 are : 6, 12, 18, 24, 30

The multiples of 10 are : 10, 20, 30, 40, 50

Find the common multiple !

a)

6

b)

10

c)

24

d)

30

9.

Which number is a factor of 36?

a)
8
b)
12
c)
16
d)
30
10.

Which number is a multiple of 12?

a)
36
b)
40
c)
80
d)
3
11.

Which of these is not a factor of 12?

a)
1
b)
2
c)
12
d)
24
12.
Composite numbers:
a)
Are always bigger than prime numbers
b)
Have more than 2 factors
c)
Have 2 pairs of factors
d)
Don't have factors
13.

True or False: 2 is the only even prime number.

a)
True
b)
False
14.

A factor is:

因数是________

a)

A number which multiplies by itself

一个数乘以这个数本身

b)

A number which is divisible by another number with no remainders

一个数能够整除其他数且没有余数

c)

A number that doubles each time

一个每次都翻倍的数

d)

A number which divides by itself

一个数除以它本身

15.
Is 5 a factor of 80?
a)
Yes
b)
No
16.

A factor is greater than the given number?

一个数的因数一直比这个数大。

a)

True

b)

False

17.

A multiple is larger than the given number?

一个数的倍数一直大于这个数本身

a)

True

b)

False

18.

Find all factors of 24.

a)

1, 2, 12, 24

b)

1, 2, 8, 24

c)

1, 2, 3, 4, 5, 6, 8, 12, 24

d)

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

19.

What are the common multiples of 3 and 7?

a)

1

b)

21

c)

35

d)

42

20.

What are the common factors of 12 and 18?

a)

2

b)

1

c)

3

d)

4