LCM and GCF Review Real World and Problems

Find the LCM of 18 and 24

• 6

• 72

• 24

• 5

At Kentucky Fried Chicken, the kitchen staff baked 96 chicken legs and 144 thighs.  The staff had to prepare platters for an office lunch.  If each platter will have the same number of legs and thighs, what is the greatest number of platters they can make?

• 48

• 2

• 4

• 16

Find the GCF of 64 and 144

• 8

• 6

• 16

• 2

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?

Do I find the GCF or the LCM?

• GCF

• LCM

Colton has 16 blue marbles and 8 white ones. If he wants to place them in identical groups without any marbles left over, what is the maximum amount of groups Colton can make?

Do I find the GCF or the LCM?

• GCF

• LCM

The school cafeteria serves tacos every sixth day and cheeseburgers every eight day. How many days will it be before they are both on the menu? Do I find the GCF or the LCM?

• GCF

• LCM

Wilma is thinking of a number that is divisible by both 17 and 8. What is the smallest possible number that Wilma could be thinking of? Do I find the GCF or the LCM?

• GCF

• LCM

Tony needs to ship 12 comedy DVDs, 24 animated DVDs, and 30 musicals. He can pack only one type of DVD in each box and he must pack the same number of DVDs in each box. What is the greatest number of DVDs Tony can pack in each box?

Do I find the GCF or the LCM?

• GCF

• LCM

Two clocks are turned on at the same time. One clock chimes every 15 minutes. The other clock chimes every 25 minutes. In how many minutes will they chime together?

• 55 minutes

• 25 minutes

• 60 minutes

• 75 minutes

Lisa is making activity baskets to donate to charity.  She has 12 coloring books, 28 markers, and 36 crayons.  What is the greatest number of baskets she can make if each type of toy is equally distributed among the baskets?

• Greatest Common Factor

• Least Common Multiple