Solutions by everydaycalculation.com

The gcf of 49 and 70 is 7.

- Find the prime factorization of 49

49 = 7 × 7 - 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 = 7

The greatest common factor (gcf) is also known as greatest common divisor (gcd) or highest common factor (hcf).

Find hcf of: 98 & 140 147 & 210 245 & 350 343 & 490 7 & 10 98 & 70 49 & 140 147 & 70 49 & 210 245 & 70 49 & 350 343 & 70 49 & 490

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