Question

Find the GCF of 100 and 60

Answer 1

The gcf of 100 and 60 is 20.

Steps to find GCF

Find the prime factorization of 100
100 = 2 × 2 × 5 × 5Find the prime factorization
of 60
60 = 2 × 2 × 3 × 5To find the gcf, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 2 × 5GCF = 20

Answer 2

Prime factorization of 100= 2×2×5×5

Prime factorization of 60=2×2 ×3×5

Multiply all prime factors that is common for both numbers to find GCF.
Therefore GCF=2×2 ×5
=20