GCF Practice

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9

Find the GCF of 64 and 144

• 8
• 6
• 16
• 2

What is the GCF of 5x² and 20x ?

• 5
• x
• 5x
• 20x

What is the GCF of 3x² and 2x ?

• 3
• 3x
• x
• 2

What is the GCF of 2x² and 4x and 8 ?

• 2x
• 2
• x
• 1

Which of these statements is true?

• All numbers have 4 factors.
• 2 is a factor of every number.
• 1 is a factor of every number.
• All odd numbers have an odd number of factors.

What is the GCF of 72y⁵ and 18y²

• y²

• 4y⁵

• 18y

• 18y²

What is the GCF of the terms below?

24x³ and 36x²

• 8x

• 6x²

• 12x²

• 4x

• 12x³

Which is a common factor of 12x and 27?

• x

• 12

• 3

• 9

What is the GCF of 18k and 15k³

• 3k²
• 3k³
• 3k
• 5k