Q. Find the greatest common factor of 18,36 , and 45 .
Factors of 18: List the factors of 18.To find the factors of 18, we look for pairs of numbers that multiply to give 18.1×18=182×9=183×6=18Factors of 18: 1,2,3,6,9,18
Factors of 36: List the factors of 36.To find the factors of 36, we look for pairs of numbers that multiply to give 36.1×36=362×18=363×12=364×9=366×6=36Factors of 36: 1,2,3,4,6,9,12,18,36
Factors of 45: List the factors of 45.To find the factors of 45, we look for pairs of numbers that multiply to give 45.1×45=453×15=455×9=45Factors of 45: 1, 3, 5, 9, 15, 45
Common factors of 18, 36, and 45: Identify the common factors of 18, 36, and 45.We look for factors that are common to all three numbers.Common factors of 18, 36, and 45: 1, 360, 361
Greatest Common Factor (GCF) of 18, 36, and 45: Find the Greatest Common Factor (GCF) of 18, 36, and 45.The common factors are 1, 3, and 9. The greatest of these is 9.GCF of 18, 36, and 45: 9
More problems from Greatest common factor of three or four numbers