GCF and Prime Factorization

Find the greatest common factor of 12 and 18.

• 2

• 3

• 9

• 6

What is the prime factorization of 24?

• 2 x 2 x 3 x 3

• 2 x 2 x 2 x 5

• 2 x 2 x 2 x 2

• 2 x 2 x 2 x 3

Determine the greatest common factor of 36 and 48.

• 6

• 18

• 24

• 12

Write the prime factorization of 60.

• 2 x 2 x 2 x 5

• 2 x 3 x 3 x 5

• 2 x 2 x 2 x 3

• 2 x 2 x 3 x 5

Calculate the greatest common factor of 20 and 30.

• 25

• 15

• 10

• 5

What are the prime factors of 42?

• 2, 3, 5

• 2, 3, 9

• 2, 4, 7

• 2, 3, 7

Find the greatest common factor of 72 and 96.

• 12

• 36

• 48

• 24

Provide the prime factorization of 90.

• 2 x 3 x 3 x 5

• 2 x 3 x 3 x 7

• 2 x 3 x 3 x 6

• 2 x 3 x 3 x 4

Compute the greatest common factor of 15 and 25.

• 10

• 5

• 3

• 20

What is the prime factorization of 56?

• 2 x 2 x 2 x 8

• 2 x 2 x 2 x 7

• 2 x 2 x 2 x 6

• 2 x 2 x 2 x 5