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

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

Jeremy has two pieces of wood:  one is 90 inches and the other is 72 inches. He wants to cut both pieces into smaller pieces of the same length.  What is the longest possible length he can cut and not have any lumber left over?

• 9

• 2

• 18

• 72

Shannon is making identical balloon arrangements for a party. She has 32 maroon balloons, 24 white
balloons, and 16 orange balloons. She wants each arrangement to have the same number of each
color. What is the greatest number of arrangements that she can make if every balloon is used?

• 6

• 2

• 4

• 8

Is this question asking to find GCF or LCM?

• GCF

• LCM

At the movie theater, they give out a free drink to every 75th customer and a free bag of popcorn to every 30th customer. Who is the first customer that is going to win both free items?

• 16th customer

• 150th customer

• 300th customer

• 180th customer

Peter has 18 oranges and 27 pears. He wants to make fruit baskets with the same number of each fruit in each basket. What is the greatest number of fruit baskets he can make?

• 1

• 2

• 3

• 4

Is this question asking to find GCF or LCM?

• GCF

• LCM

GCF of: 
14 and 20

• 7

• 28

• 2

• 6

Find the LCM of 18 and 24

• 6

• 72

• 24

• 5