Solutions by everydaycalculation.com

The GCF of 22 and 20 is 2.

- Find the prime factorization of 22

22 = 2 × 11 - Find the prime factorization of 20

20 = 2 × 2 × 5 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2

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Find hcf of: 44 & 40 11 & 10 66 & 60 110 & 100 154 & 140 44 & 20 22 & 40 66 & 20 22 & 60 110 & 20 22 & 100 154 & 20 22 & 140

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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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