LCM GCF Prime Factorization Fractions

What is the LCM of 7 and 8? 

• 7

• 8

• 42

• 56

What is the LCM of 4 and 12? 

• 4

• 8

• 12

• 16

GCF of 27 and 70

• 3

• 1

• 7

• 10

GCF of 20 and 35

• 4

• 5

• 7

• 20

Which pair of numbers has a GCF of 10 AND a LCM of 60?

• 2 and 5

• 20 and 30

• 5 and 10

• 15 and 20

Tags

TEKS.MATH.6.7A

Complete the prime factorization by labeling the black boxes.

c

b

a

7

3

126

Find the prime factorization of 81

• 2² • 7

• 2³ • 5 • 7

• 4³

• 3⁴

What is the prime factorization of 90?

What is the prime factorization of 56?

Find the prime factorization of 24.

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2

• 2 x 2 x 3 x 3

• 2 x 2 x 2 x 4