LCM and GCF Test Practice

Find the prime factorization of 60

• 5 x 12

• 2 x 3² x 5

• 2² x 3 x 5

• 2⁷

Find the prime factorization of 108

• 2³ x 3²

• 2² x 3³

• 2⁵ x 3

• 2 x 3 x 7 x 11

What is the greatest common factor of 36 and 54

• 2

• 6

• 9

• 18

What number has the prime factorization of 2³ x 3² x 5?

• 360

• 720

• 180

• 240

GCF of 27 and 70

• 1

• 3

• 5

• 10

Which of the following is not a multiple of 9?

• 9

• 19

• 90

• 29

Which pair of numbers has GCF of 10 and LCM of 60?

• 2 and 5

• 20 and 30

• 5 and 10

• 15 and 20

What is the least common multiple of 4 and 10?

• 4

• 2

• 48

• 20

What is the LCM of 18 and 20?

• 2

• 10

• 90

• 180

What is the LCM of 4,8, and 28?

• 4

• 56

• 14

• 28