Gcf and Lcm

Which pair of numbers has an LCM of 16?

• 4 and 8

• 3 and 16

• 4 and 16

• 2 and 4

Every 6th customer at the flower shop receives a free rose, and every 9th customer receives a free lily. Which customer will be the first to receive a free rose and a free lily?

• 9th customer

• 18th customer

• 36th customer

• 54th customer

Ms. Corvino has 84 packs of pretzels and 56 juice boxes. She wants to share them equally with the in-person 6th graders with nothing leftover. What is the greatest number of students that can receive pretzels and juice boxes?

• 4

• 14

• 7

• 28

Plastic forks come in packs of 8, spoons in packs of 10, and knives in packs of 12. What is the smallest number of forks, knives and spoons that you could have to have the same number each?

• 24

• 120

• 60

• 40

Nancy practices her tiktok dances often. She practices the #shotxcrisis dance every 4 days, #positions dance every 6 days, and #franchise dance every 9 days. If she practices all three of them today, how many days will it be until she practices all 3 dances on the same day again?

• 36 days

• 18 days

• 24 days

• 72 days

Is this an least common multiple problem, greatest common factor problem, or neither? Andy is planning a birthday party. His mom said she would make 18 personal pizzas and 27 mini-cupcakes. How many people can Andy invite to his party so the pizza and cupcakes are shared equally among his friends with nothing leftover? How many pizzas and cupcakes will each person get?

• Least Common Multiple

• Greatest Common Factor

• Neither

Is this a least common multiple problem, greatest common factor problem, or neither?

Mr. Bluestone purchased boxes of baseballs contains 15 balls each and boxes of gloves each containing 25 gloves. Mr. Bluestone purchased the same number of balls and gloves. How many balls and gloves he did purchase if he bought the same number of each?

• LCM

• GCF

• Neither

What is the GCF of 99 and 45?

• 18

• 3

• 9

• 11

What is the GCF of 20, 40 and 72?

• 8

• 4

• 360

• 2

What is the greatest common factor of 39 and 13?

• 3

• 13

• 1

• 39