![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Greatest common factor (GCF) is a number that is greatest among the
\common factors of the numbers.
\List the factors of each number.
\Factors of 12 : 2, 3, 4, 6, 12
\Factors of 36 : 2, 3, 4, 6, 9, 12, 18, 36
\Identify the greatest common factor.
\The greatest common factor of 12 and 36 is 12.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The greatest common factor of 12 and 36 is 12.