GCF/LCM

What does LCM mean?

• Least Common Multiple

• Least Calculated Model

• Little Coordinate Meeting

• Lowest Common Multiplication

What is the GCF of 16 and 40?

• 4

• 8

• 80

• 10

What is the GCF of 8 and 10?

• 1

• 3

• 4

• 2

The school cafeteria serves tacos every 6th day and cheeseburgers every 8th 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? (think LCM)

• 14 days

• 24 days

• 34 days

• 44 days

GCF of 12 and 18

• 3

• 4

• 6

• 2

Find the GCF of 64 and 144

• 8

• 6

• 16

• 2

Maya had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 4

• 2

• 48

• 8

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

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 48 seconds

• 45 seconds

• 16 seconds

• 3  seconds