Greatest Common Factor (GCF) Quiz

What is the greatest common factor of 12 and 18?

• 6

• 3

• 10

• 15

Find the common factors of 24 and 36.

• 7, 14, 21, 28, 35

• 8, 16, 32

• 5, 10, 15, 20, 25, 30

• 1, 2, 3, 4, 6, 12

Tags

CCSS.4.OA.B.4

Solve the word problem: A farmer has 24 cows and 36 sheep. What is the greatest number of animals he can put in each pen so that each type of animal is in a separate pen?

• 20

• 12

• 15

• 10

What is the greatest common factor of 30 and 45?

• 20

• 25

• 10

• 15

Find the common factors of 40 and 60.

• 25

• 20, 10, 5, 2, 1

• 30

• 15

Solve the word problem: A teacher has 40 pencils and 60 erasers. What is the greatest number of students she can give supplies to so that each student gets the same number of pencils and erasers?

• 30

• 20

• 100

• 50

What is the greatest common factor of 18 and 27?

• 15

• 12

• 9

• 6

Find the common factors of 56 and 84.

• 1, 3, 5, 7, 9, 11, 13

• 1, 2, 4, 7, 8, 14, 28

• 3, 6, 9, 12, 15, 18, 21

• 5, 10, 15, 20, 25, 30, 35

Solve the word problem: A baker has 56 chocolate chip cookies and 84 oatmeal cookies. What is the greatest number of cookie boxes he can fill so that each box has the same number of each type of cookie?

• 40

• 25

• 60

• 28

What is the greatest common factor of 20 and 25?

• 3

• 10

• 5

• 15