Solutions by everydaycalculation.com

The GCF of 30 and 70 is 10.

- Find the prime factorization of 30

30 = 2 × 3 × 5 - 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 = 2 × 5 - GCF =
**10**

MathStep (Works offline)

Download our mobile app and learn how to find GCF of upto four numbers in your own time:

Android and iPhone/ iPad

Find hcf of: 60 & 140 15 & 35 90 & 210 150 & 350 6 & 14 210 & 490 60 & 70 30 & 140 90 & 70 30 & 210 150 & 70 30 & 350 210 & 70 30 & 490

Enter two numbers separate by comma. To find GCF of more than two numbers, click here.

The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

© everydaycalculation.com