Question

How do I find the Greatest common factor??

Answer 1

1. List the prime factors of each number

2. Multiply those factors both factors have in common. If there are no common prime factors the GCF is 1.

Explanation:

Use the factor tree method

Answer 2

factors of a number are those numbers that can divide the number exactly without leaving a reminder.

using 6 and 12 as an example

factors of 12 {1,2,3,4,6,12}

factors of 6 { 1,2,3,6}

then the common factor from both 6 and 12 are { 1,2,3,4,6}

and from this , the greatest common factor is 6.