Greatest Common Factor Introduction

What is the greatest common factor of 24 and 12?

What is the greatest common factor of 14, 28, and 49?

Type in the greatest common factor of 22 and 28.

Solve the problem below and type in your answer.

Click on the number pairs below where the greatest common factor is 9. Select ALL that apply.

Look at the prices in the chart below. Which two items have prices with a greatest common factor of $8?

Find the greatest common factor of each number set and then put them in order from least to greatest.

Sid wanted to find the greatest common factor of 100 and 60, however, he made a mistake while making his factor trees. Click on the circled area where he made his error.

Sasha wanted to find the greatest common factor of 40 and 64. She wrote the factor trees below to help her.

Clyde states that the GCF of an odd number and an even number is always even. Is Clyde correct? Explain your answer using a mathematical example.