Greatest Common Factor of Numbers

GCF of 8 and 20

• 8

• 2

• 4

• 10

What is the greatest common factor of 48x²and 32x³?

• 8x²

• 16x²

• 16x

• 96x³

What is the GCF of 10a²b³ and 20a²b²?

• 20a²b³

• 10a²b³

• 20ab²

• 10a²b²

What is the GCF of 18k and 15k³

• 3k²

• 3k³

• 3k

• 5k

Determine the greatest common factor of 
-5j³k⁷m² and -20jk²m⁵

• -5jk²m²

• -20j³k⁷m⁵

• -5j³k⁷m⁵

• -20jk²m²

What is the greatest common factor of 30x and 56x²

• 4x

• 6x

• 2x

• x

Ms. Waters was trying to find the GCF using the ladder method, but she made an error along the way! Identify the step where she went wrong. 

• Step 1

• Step 2

• Step 3

• Step 4

The Greatest Common Factor of two prime numbers is

• 0

• 1

• There are no common factors.

• Themselves.

Sara had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 4

• 2

• 48

• 8

GCF 15 and 36

• 8

• 6

• 3

• 4