Find the Greatest Common Factor by Prime Factorization

Practice finding the greatest common factor of two numbers by finding the prime factorization with these helpful number theory worksheets!

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Click on a worksheet in the set below to see more info or download the PDF.

Find the Greatest Common Factor By Prime Factorization #1

Find the Greatest Common Factor By Prime Factorization #1

Use this number theory worksheet to practice finding the greatest common factor of two numbers by finding the prime factorization! 
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Find the Greatest Common Factor By Prime Factorization #2

Find the Greatest Common Factor By Prime Factorization #2

Grow students’ math skills with more practice finding the greatest common factor by using factor trees to find the prime factorization.
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Find the Greatest Common Factor By Prime Factorization #3

Find the Greatest Common Factor By Prime Factorization #3

Find the greatest common factor (GCF) using the prime factorization method with this sixth-grade practice worksheet!
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