Prime Factorization Lcm and Gcf

2 x 2 x 2 is the prime factorization of

• 6

• 12

• 22

• 8

What are the prime factors of 30? 

• 3, 2, 5 

• 1, 2, 3, 5, 6, 15, 30

• 3, 30

• 10, 3

Use a number tree to find the prime factorization of 48

• 4x2x6

• 4x2x2x3

• 3x2x2x2x2

• 12x4

GCF of 99 and 54

• 9

• 3

• 6

• 8

Using prime factorization, find the LCM of 14 and 35.

• 70

• 140

• 490

• 245

Using prime factorization find the LCM of 24 and 56

• 8

• 24

• 168

• 12

Using prime factorization, find the GCF of 81 and 108.

• 9

• 27

• 54

• 81

Complete the prime factorization by labeling the black boxes.

c

b

a

7

126

3

Using prime factorization, find the GCF of 60 and 48.

• 6

• 12

• 24

• 4

Find the prime factorization of 81

• 2² • 7

• 2³ • 5 • 7

• 4³

• 3⁴