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Find GCF from factored numbers

Teaching Transcript

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Let's find the greatest common factor of 8 and 12. We already have their prime factors here

Find the set of shared factors. That's just 2 and 2

The greatest common factor is the multiplication of these shared factors. 2 times 2 is 4, so 4 is the greatest common factor of 8 and 12

This math skill teaches how to find the greatest common factor (GCF) of two numbers by identifying their shared prime factors and multiplying them together to find the GCF.

Skill Practice

Find greatest common factor from factored numbers

Test your understanding of find GCF from factored numbers by practicing it! Work through the below exercises to use it in practice.