GCF Easy

Find the greatest common divisor.

(10, 50)

• 1

• 2

• 5

• 10

Find the greatest common divisor.

(16, 30)

• 1

• 2

• 4

• 8

Find the greatest common divisor.

(9, 24)

• 1

• 2

• 3

• 6

Find the greatest common divisor.

(12, 32)

• 4

• 2

• 6

• 8

Find the greatest common divisor.

(3, 7)

• 1

• 3

• 7

• 21

What are all of the factors of 12?

• 1 and 12

• 1, 2, 3, 4, & 6

• 1, 2, 3, 4, 6, & 12

• 1, 2, 3, 4, 6, 10, & 12

• 12, 24, 36, 48, 72 , 84...

What is the GCF of 9 and 15?

• 1

• 3

• 6

• 8

Which pair of numbers have a GCF of 3?

• 15 and 27

• 20 and 30

• 45 and 15

• 9 and 18

Which pair of numbers has a GCF of 8?

• 8, 36

• 40, 80

• 16, 56

• 24, 42