Factors & Multiples Review

Which factors do 10 and 20 have in common? Select ALL that apply.

• 1

• 2

• 5

• 4

• 10

Which numbers below are prime numbers?

• 1, 2, 3, 4, 5, 6

• 2, 4, 6, 8, 10, 12

• 1, 3, 5, 7, 11

• 1, 3, 5, 7, 9, 10

Which numbers are below are all composite numbers?

• 1, 2, 3, 4, 5

• 3, 6, 9, 10, 11

• 4, 6, 8, 10, 12

• 5, 10, 15, 20, 25

What are all of the factors of 18?

• 2, 9, 8, 10, 18

• 1, 2, 3, 6, 9, 18

• 2, 4, 6, 8, 10

• 1, 18

Read each statement below. Choose all statements that are not true.

• 2 is a factor of 15.

• 3 is a factor of 15.

• 4 is a factor of 15.

• 5 is a factor of 15.

What are all of the factors of 24?

• 1, 2, 4, 6, 12, 24

• 1, 2, 4, 20, 24, 48

• 2, 3, 4, 5, 6, 7, 8

• 1, 2, 3, 4, 6, 8, 12, 24

Which are all factors of 14? Select ALL that apply.

• 1

• 2

• 4

• 7

• 14

14 is a prime number

• True

• False

Which are all composite numbers?

• 3, 6, 8, 10, 11, 13

• 5, 10, 15, 20, 25

• 4, 8, 10, 12, 14, 16

• 2, 4, 6, 8, 10, 12

17 is a prime number.

• True

• False