Factors and GCF Quiz

What is the greatest common factor of 12 and 18?

• 4

• 2

• 8

• 6

Find the greatest common factor of 24 and 36.

• 30

• 18

• 12

• 6

Determine the greatest common factor of 15 and 25.

• 10

• 3

• 5

• 20

What is the greatest common factor of 40 and 60?

• 10

• 20

• 50

• 30

Find the greatest common factor of 16 and 24.

• 4

• 12

• 20

• 8

Determine the greatest common factor of 35 and 49.

• 5

• 10

• 7

• 14

What is the greatest common factor of 72 and 90?

• 12

• 24

• 18

• 36

Find the greatest common factor of 28 and 42.

• 7

• 14

• 21

• 35

Determine the greatest common factor of 50 and 75.

• 25

• 20

• 15

• 10

What is the greatest common factor of 80 and 100?

• 20

• 10

• 30

• 50