Solutions by everydaycalculation.com

The GCF of 20 and 8 is 4.

- Find the prime factorization of 20

20 = 2 × 2 × 5 - Find the prime factorization of 8

8 = 2 × 2 × 2 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 2 - GCF =
**4**

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Find hcf of: 40 & 16 10 & 4 60 & 24 100 & 40 140 & 56 40 & 8 20 & 16 60 & 8 20 & 24 100 & 8 20 & 40 140 & 8 20 & 56

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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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