Unit 1: Factors and Multiples Review

Select all the factors of 18. SELECT ALL that apply.

• 1

• 2

• 3

• 8

• 6

Three multiples of 3 are shown in the image. Following the pattern, which multiple would go in the box?

24 is a common multiple of 3 and 12. What are some other multiples they have in common? SELECT ALL THAT APPLY.

• 6

• 36

• 18

• 12

• 9

Select all the composite numbers.

• 9

• 19

• 21

• 25

• 23

Select all the factors of 48. Be sure to make a T-chart to list all the factors.

• 1, 2, 4, 6, 8, 12, 14

• 2, 3, 4, 6, 8, 13, 24

• 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

• 1, 2, 4, 6, 7, 8, 12, 18, 48

Select all the numbers that have exactly 3 factors.

• 12

• 4

• 9

• 24

Which of the following are a factor pair of 18?

• 2, 6

• 3, 9

• 3, 6

• 2, 8

Which statements are true about the number 12? Select all the correct answers.

• It is prime

• It is composite

• It has 6 factors

• It is a multiple of 3 and 6

• It is a factor of 36

Use the number chart to help you SELECT ALL of the common multiples of 4 and 8 that are listed below.

• 12

• 8

• 32

• 20

What are the factors of 32?

• 1, 2, 3, 8

• 1, 2, 4, 8, 16, 32

• 1, 2, 4, 5, 6, 8, 16, 32

• 1, 2, 3, 4, 8, 16, 32