Prime Factorization/GCF/LCM Review

2 x 2 x 2  or 2³ is the prime factorization of

• 6
• 12
• 22
• 8

Tags

CCSS.6.EE.A.1

Use a number tree to find the prime factorization of 32

• 2x2x2x2x2x2

• 2x2x2x2x2

• 2x2x2x2

• 2x2x2x2x1

Use a number tree to find the prime factorization of 60

• 2x2x3x5

• 5x6x7

• 2x3x3x5

• 2x2x2x3

Use a number tree to find the prime factorization of 42

• 2x2x3x4

• 6x7

• 2x3x7

• 2x2x3x5

Use a number tree to find the prime factorization of 64

• 2x2x3x3

• 2x2x2x2X2

• 2x2x2x2x2x2

• 2x2x3

Use a number tree to find the prime factorization of 105

• 3 x 5 x 7

• 3 x 5 x 11

• 1 x 2 x 5 x 7

• 2 x 3 x 5 x 7

Find the prime factorization of 30

• 2 • 2 • 5 • 7

• 2 • 2 • 3 • 3

• 2 • 3 • 7

• 2 • 3 • 5

What number is never allowed in a factor tree? 

• 13 (it's bad luck!)
• 1 
• 8675309
• 2

Tags

CCSS.6.EE.A.1

Write 68 as a product of its prime factors.

• 2x34

• 2x5x17

• 2x2x17

• 2x3x17

Write 92 as a product of its prime factors.

• 2x2x2x23

• 2x46

• 2x2x23

• 2x3x23