Prime Factorization GCF LCM Compare Round Fractions

Find the GCF of 15, 24, and 12

• 3

• 6

• 4

• 2

Find the prime factorization for 36

• 2^2 x 3^3

• 2 x 7

• 2^2 x 3^2

• 3^2 x 2^3

Find the prime factorization of 56.

• 2x2x2x7

• 2x28

• 3x3x7

A city holds an election for Mayor every 4 years and an election for Treasurer every 6 years. It held elections for both Mayor and Treasurer this year. How many years will it be before the election for Mayor and Treasurer both happen in the same year again?

• The least common multiple is 20

• The least common multiple is 10

• The least common multiple is 12

• The least common multiple is 24

Two bands are marching in a parade. There are 32 people in the first band. There are 40 people in the second band. The same number of people are marching in each row in both bands. What is the greatest number of people that could be marching in each row?

• The greatest common factor is 2

• The greatest common factor is 10

• The greatest common factor is 4

• The greatest common factor is 8

What is the Greatest Common Factor of 10 and 21?

• 2

• 12

• 1

• 5

What is the Least Common Multiple of 4 and 14

• 28

• 42

• 56

• 24

What is the GCF of 8 and 24?

• 1

• 24

• 8

• 4

Adam is trying to find the greatest number of gift bags he can give to his friends. He wants the same amount of toy dinosaurs and stickers in each bag. If he has 30 toy dinosaurs and 20 stickers, what does he need to find? How many dinosaurs and stickers will be in each bag?

• Greatest Common Multiple; 3 dinosaurs and 2 stickers

• Greatest Common Factor; 3 dinosaurs and 2 stickers

• Greatest Common Factor; 6 dinosaurs and 4 stickers

• Least Common Multiple; 60 dinosaurs and 60 stickers

What is the greatest common factor of 24 and 36?

• 2

• 3

• 12

• 24