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LCM & GCF Examples Page 7

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GCF Method 2 Example 1

Method 2 for finding the GCF is simpler to remember, but can take more time and can lead to more mistakes, since it is easy to forget factors. To find the GCF, list all the factors of each number, not just the prime factors. It can be helpful to write these factors in pairs. Compare the factors of each number until you find the largest one that they both share.

Find the greatest common factor of 72 and 48.

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