GCF

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9

What is the GCF of 4 and 12?

• 3

• 1

• 6

• 4

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

Which number is a factor of 18

• 4

• 7

• 6

• 12

Which number is a factor of 21

• 8

• 9

• 6

• 3

Which number is a factor of 23?

• 8

• 4

• 3

• 1

GCF of 4 and 6

• 2

• 3

• 4

• 6

GCF of 10 and 12

• 5

• 2

• 3

• 6