Solutions by everydaycalculation.com

The GCF of 7 and 210 is 7.

- Find the prime factorization of 7

7 = 7 - Find the prime factorization of 210

210 = 2 × 3 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 7

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Find hcf of: 14 & 420 21 & 630 35 & 1050 49 & 1470 1 & 30 14 & 210 7 & 420 21 & 210 7 & 630 35 & 210 7 & 1050 49 & 210 7 & 1470

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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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