Factors and Multiples

Which number is a multiple of 7?

• 27

• 49

• 1

• 6

Which number has the factors 2, 3, 4, 6

• 42

• 30

• 15

• 12

What are the common factors of 12 and 16?

• 1, 2, 3

• 1, 2, 4

• 1, 2, 3, 6

• 1, 2, 3, 6, 12

Which is a multiple of 3 and 9?

• 18

• 1

• 9

• 16

What are all the factors of 21?

• 1, 3, 4, 7, 21

• 2, 4, 6, 8, 42

• 1, 3, 7, 21

• 1, 2, 3, 7, 21

Which is a factor of both 12 and 18?

• 4

• 8

• 36

• 6

Which number has exactly three factors?

• 1

• 2

• 4

• 6

What are all the factors of 54?

• 1, 2, 4, 6, 8, 28

• 1, 2, 3, 6, 9, 18, 27

• 24

• 1, 2, 3, 6, 9, 12

Which are the factors of 24?

• 1, 2, 3, 4, 6, 8, 12, 24

• 1, 2, 3, 4, 5, 6, 7, 12, 24

• 2, 4, 6, 8, 10

• 1, 2, 3, 4, 5

Which is a prime number?

• 1

• 6

• 9

• 17