Finding the Common Factors

GCF of 28 and 40

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Factors of 28 are 1, 2, 4, 7, 14, and 28. Factors of 92 are 1, 2, 4, 23, 46, and 92. The Highest Common Factor (HCF) of 28 and 92 is ....

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John makes 72 doughnuts and 81 cupcakes. He will put then in delivery boxes. He wants to put the same number of doughnuts and cupcakes in each box. How many boxes will he need?

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Find the HCF of 30 and 36

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Find the HCF for 18, 36, and 81

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GCF of 99 and 54

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Find the greatest common factor between 12 and 36

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Find the greatest common factor between 45 and 75

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• 25

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Find the greatest common factor between 24 and 48

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• 24

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Find the greatest common factor

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