Solutions by everydaycalculation.com

The GCF of 420 and 4200 is 420.

- Find the prime factorization of 420

420 = 2 × 2 × 3 × 5 × 7 - Find the prime factorization of 4200

4200 = 2 × 2 × 2 × 3 × 5 × 5 × 7 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 2 × 3 × 5 × 7 - GCF =
**420**

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Find HCF of: 840 & 8400 210 & 2100 140 & 1400 84 & 840 60 & 600 840 & 4200 420 & 8400 1260 & 4200 2100 & 4200 2940 & 4200

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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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