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Greatest Common
Factor (GCF)
To find the greatest common factor (GCF), list the factors
of each number.
Example: Find the GCF of 48 and 64:
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Factors of 48
1,48
2,24
3,16
4,12
6,8
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Factors of 64
1,64
2,32
4,16
8,8
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The common factors are 1, 2, 4, 8, and 16.
The Greatest Common Factor (GCF) of 48 and 64 is 16.
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