Finding GCF

Which pair of numbers have a greatest common factor of 2?

• 6 and 12

• 4 and 6

• 10 and 2

• 2 and 24

What is the GCF for 4 and 16?

• 4

• 16

• 2

• 8

What is the GCF of 5 and 7?

• 35

• 1

• 5

• 7

Find the greatest common divisor.

• 1

• 2

• 5

• 10

Find the greatest common divisor.

• 4

• 2

• 6

• 8

Find the greatest common divisor.

• 3

• 3b

• 9

• 9b

Find the greatest common divisor.

• 1

• 2

• 4

• 8

Find the greatest common divisor.

• 1

• 2

• 3

• 6

Find the greatest common divisor.

• 1

• 3

• 7

• 21

Find the greatest common divisor.

• 1

• 2x

• 4

• 4x