Solutions by everydaycalculation.com

The GCF of 30 and 27 is 3.

- Find the prime factorization of 30

30 = 2 × 3 × 5 - Find the prime factorization of 27

27 = 3 × 3 × 3 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 3

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Find hcf of: 60 & 54 90 & 81 10 & 9 150 & 135 210 & 189 60 & 27 30 & 54 90 & 27 30 & 81 150 & 27 30 & 135 210 & 27 30 & 189

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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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