Exploring Factors and Multiples

What are the factors of 12?

• [1, 2, 3, 4, 6, 12]

• 10

• 5

• 7

List the first five multiples of 3.

• 5, 10, 15, 20, 25

• 1, 2, 3, 4, 5

• 3, 6, 9, 12, 18

• [3, 6, 9, 12, 15]

What are the common factors of 8 and 12?

• 1, 3, 5

• 1, 2, 4

• 2, 6, 8

• 3, 4, 6

Identify the common multiples of 4 and 5.

• 15

• 20, 40, 60, 80, ...

• 30

• 45

Is the number 7 prime or composite?

• odd

• prime

• even

• composite

What are the factors of 15?

• 2, 4, 6, 8

• 10, 12, 14, 16

• 7, 9, 11, 13

• [1, 3, 5, 15]

List the first three multiples of 6.

• 3, 9, 15

• 6, 12, 24

• [6, 12, 18]

• 6, 14, 20

Find the common factors of 10 and 20.

• 1, 3, 5, 15

• 1, 2, 5, 10

• 2, 4, 6, 8

• 5, 10, 15, 25

Is the number 9 prime or composite?

• prime

• odd

• even

• composite

What are the factors of 18?

• 10, 12, 14

• 4, 5, 7

• 15, 20, 21

• [1, 2, 3, 6, 9, 18]