Solutions by everydaycalculation.com

The GCF of 9 and 70 is 1.

- Find the prime factorization of 9

9 = 3 × 3 - Find the prime factorization of 70

70 = 2 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 18 & 140 27 & 210 45 & 350 63 & 490 18 & 70 9 & 140 27 & 70 9 & 210 45 & 70 9 & 350 63 & 70 9 & 490

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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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