GCF and LCM and Prime Factorization

Find the prime factorization of 18

• 2 • 9

• 2² • 3

• 2 • 3²

• 3 • 6

Find the prime factorization of 60

• 5 • 12

• 2 • 3² • 5

• 2² • 3 • 5

• 2⁷

Find the prime factorization of 30

• 2² • 5 • 7

• 2 • 3²

• 2 • 3 • 7

• 2 • 3 • 5

Find the prime factorization of 81

• 2² • 7

• 2³ • 5 • 7

• 4³

• 3⁴

What is the GCF of 4 and 12?

• 3

• 1

• 6

• 4

What is the greatest factor of 28 and 49?

• 1

• 2

• 7

• 12

What is the LCM of 4 and 12? 

• 4

• 8

• 12

• 16

What is the LCM of 2, 4, 6?

• 6

• 12

• 4

• 2

What is the LCM of 22 and 6? 

• 6

• 22

• 42

• 66

Find the LCM (Least Common Multiple) of 18 and 24.

• 6

• 72

• 24

• 5