Find GCF & LCM

Find the LCM of each set of numbers.
8, 12 

• 48

• 24

• 76

• 96

Find the LCM of each set of numbers. 
 4, 5, 6 

• 20

• 36

• 45

• 60

Find the LCM of each set of numbers. 
5, 10, 15 

• 50

• 30

• 90

• 150

Avery gets newsletters by e-mail. He gets one for sports every 5 days, one for model railroads every 10 days, and one for music every 8 days. If he got all three today, how many more days will it be until he gets all three newsletters on the same day again? 

• 80 days

• 40 days

• 50 days

• 60 days

What is the least common multiple (LCM) of 6 and 8?

• 6

• 8

• 48

• 24

GCF of: 
14 and 20

• 7

• 28

• 2

• 6

GCF 24 and 36

• 8

• 6

• 12

• 4

GCF of 32 and 40

• 2

• 4

• 6

• 8

GCF (25, 15)

• 5

• 10

• 15

• 20

LCM (9, 12)

• 9

• 36

• 12

• 3