Gcf and Lcm Practice

A city of Mechanicsburg has 25 pine trees and 20 cedar trees to be planted. They are separating the trees for different areas. They want each area to have the same number of pine trees and the same number of cedar trees. What is the greatest number of areas that can be created?

• 1

• 4

• 5

• 10

Is this question asking to find GCF or LCM?

• GCF

• LCM

GCF of 15 and 35

• 15

• 3

• 7

• 5

What is the LCM of 12 and 10?

• 1

• 2

• 60

• 120

Is this question asking to find GCF or LCM?

• GCF

• LCM

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

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