GCF and LCM Video

The school cafeteria serves tacos every sixth day and cheeseburgers every eight day. If tacos and cheeseburgers are both on today’s menu, how many days will it be before they are both on the menu again?

• 14 days

• 24 days

• 34 days

• 44 days

Find the Least Common Multiple (LCM) of 12 & 30

• 30

• 36

• 60

• 90

GCF of: 
14 and 20

• 7

• 28

• 2

• 6

Which is the GCF of 4 and 12?

• 2

• 4

• 12

• 24

Which pair of numbers has a LCM of 20?

• 4 and 5

• 2 and 10

• 5 and 10

• 4 and 6

Find the LCM of 18 and 24

• 6

• 72

• 24

• 5

What is the least common multiple (LCM) of 8 and 5?

• 50

• 40

• 5

• 8

GCF 24 and 36

• 8

• 6

• 12

• 4

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

• 1

• 6

• 2

• 3

What is the GCF of 56 and 49?

• 14

• 2

• 8

• 7