Prime Factorization, GCF, and LCM Assessment

Select ALL prime numbers.

• 9

• 13

• 15

• 17

• 21

Select ALL composite numbers.

• 7

• 18

• 27

• 35

• 41

The prime factorization of 48 is...

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2 x 3

• 2 x 2 x 3 x 3 x 3

• 2 x 2 x 3 x 3

The prime factorization of 30 is...

Find the GCF of 60 and 135.

• 5

• 15

• 12

• 3

Find the GCF of 28 and 44.

Find the GCF of 36 and 96.

Find the LCM of 12 and 15.

• 3

• 180

• 60

• 120

Find the LCM of 6 and 10.

Find the LCM of 12 and 16.