Introduction to GCF

Find the GCF of 64 and 144

• 8

• 6

• 16

• 2

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

Find the GCF of 36x and 21

• 1

• 2

• 3

• 4

• 7x

• x

• 7

• 1

What are the TWO missing numbers?

• 8

• 7

• 3

• 5

What is the greatest common factor of 12 and 18?

• 2

• 3

• 4

• 6

What is the greatest common factor of 42xy² and 28x³y?

• 2x³y²

• 28xy

• 14xy

• 14xy²