Factors - Multiples - Primes - EXAM QUESTIONS

Circle the number that is a multiple of 25.

• 55

• 65

• 75

• 85

Circle the number that is a factor of 10.

• 7

• 6

• 5

• 4

Circle the factor of 32.

• 16

• 12

• 3

• 64

Write down all the factors of 45.

• 1, 3, 5, 9, 15, 45

• 2, 4, 6, 8, 10, 12

• 1, 2, 3, 4, 5, 6

• 5, 10, 15, 20, 25, 30

Write down one multiple of 12.

• 12

• 15

• 18

• 20

Complete the boxes using a factor of 12 and a factor of 40.

• 3 and 10

• 2 and 15

• 5 and 6

• 4 and 8

Circle the multiple of both 8 and 12.

• 4

• 32

• 72

• 108

Which of these numbers has exactly two factors? Circle your answer.

• 6

• 7

• 8

• 9

Circle all the numbers that have 11 as a factor.

• 121

• 122

• 132

• 133

Circle the number that is not a multiple of 6.

• 24

• 76

• 108

• 144