GCF and LCM and Prime Factorization

2 x 2 x 2 is the prime factorization of

• 6

• 12

• 22

• 8

Use a number tree to find the prime factorization of 48

• 4x2x6

• 4x2x2x3

• 3x2x2x2x2

• 12x4

GCF of 99 and 54

• 9

• 3

• 6

• 8

What is the LCM of 3 and 6? 

• 3

• 6

• 12

• 15

What is the GCF (Greatest Common Factor) of 12 and 6?

• 1

• 6

• 2

• 3

Find the GCF of 42 and 6.

GCF of 36 and 60

What is the GCF of 56 and 49?

• 14

• 2

• 8

• 7

GCF 24 and 36

• 8

• 6

• 12

• 4

What is the greatest common factor of 15 and 36?

• 6

• 8

• 4

• 3