Greatest Common Factor

What does GCF stand for?

• Greatest Common Factor

• Greatest Common Fraction

• Greatest Common Function

• Greatest Common Formula

What is the first step in finding the GCF?

• Subtract the numbers

• List the factors of each number

• Divide the numbers

• List the multiples of each number

Which of the following is a factor of 24?

• 5

• 7

• 8

• 9

Which of the following is NOT a factor of 40?

• 5

• 3

• 10

• 20

Once you have all of the factors listed for each number, explain how to find the GCF.