Finding the Common Factors

What is the Greatest Common Factor of 16 and 24?

• 2 x 3 = 6

• 2 x 2 x 2 = 8

• 3 x 2 x 4 = 24

• 2 x 3 x 2 = 12

List all the factors of 12

• 1, 2, 3, 4, 6, 12

• 1, 2, 4, 12

• 1, 12

• 1, 2, 3, 4, 5, 6, 12

Tags

CCSS.4.OA.B.4

What is the GCF of 36 and 24?

• 6

• 12

• 8

• 9

GCF of 8 and 20

• 8

• 2

• 4

• 10

What are the common factors of 24 and 36?

• 1, 2, 3, 4, 6, 12

• 1, 3, 4, 6

• 2, 4, 12

• 1, 2, 3, 4, 5, 12

Select all the common factors of 12 and 36.

What is the common factor of 24 and 36?

• 2

• 3

• 12

• 24

Which number is a common factor of 15, 18, and 30?

• 9

• 6

• 5

• 3

What are the common factors of 28 and 42?

• 4, 8, 16, 32

• 3, 6, 9, 12

• 1, 2, 7, 14

• 5, 10, 15, 20

Answer explanation

The common factors of 28 and 42 are 1, 2, 7, and 14.

List the common factors of 35 and 49.

• 1, 7

• 4, 8

• 3, 6

• 2, 5