Greatest Common Factor Keystone Algebra Review

GCF 15 and 36

• 8

• 6

• 3

• 4

GCF of 32 and 40

• 2

• 4

• 6

• 8

GCF of 50 and 100

• 10

• 25

• 50

• 5

What is the greatest factor of 28 and 49?

• 1

• 2

• 7

• 12

What is the GCF of 20 and 30?

• 5

• 2

• 10

• 20

GCF of 24 and 56

• 2

• 4

• 6

• 8

GCF of 8 and 20

• 8

• 2

• 4

• 10

GCF of 16 and 40

• 4

• 8

• 2

• 10

GCF of 12 and 28

• 3

• 6

• 2

• 4

GCF of 15 and 35

• 15

• 3

• 7

• 5