Solutions by everydaycalculation.com

The GCF of 10 and 5 is 5.

- Find the prime factorization of 10

10 = 2 × 5 - Find the prime factorization of 5

5 = 5 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 5

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Find hcf of: 20 & 10 30 & 15 50 & 25 2 & 1 70 & 35 20 & 5 10 & 10 30 & 5 10 & 15 50 & 5 10 & 25 70 & 5 10 & 35

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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

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