What is the GCF of 20 and 12?
Answer: GCF of 20 and 12 is 4
Two methods to find the GCF of 20 and 12 are explained below.
Methods to find GCF of 20 and 12
Prime factorization Method
Long division Method
Method1: GCF of 20 and 12 by Prime Factorization
Below is the prime factorisation done for 12 and 20
Method2: GCF of 20 and 12 by Long Division
Step 1: Divide 20 by 12 and check the remainder.
Step 2: Make the remainder of the above step as the divisor and the divisor of the above step as the dividend and perform the long division again.
Step 3: Continue till you get remainder as 0