McGraw-Hill's New York City SHSAT by Cynthia Knable

Author:Cynthia Knable
Language: eng
Format: epub
Publisher: McGraw Hill LLC
Published: 2012-01-15T00:00:00+00:00

Greatest Common Factor

The greatest common factor, also known as the GCF, is the largest number that is a factor of two or more numbers. To find the GCF of a pair of numbers, list all of the prime factors of each number. Then, multiply the factors that both numbers have in common.

Let’s find the GCF of 12 and 18. First, list all of the prime factors of both numbers.

Prime factors of

Prime factors of

Next, identify which factors are shared by both numbers.

Prime factors of

Prime factors of

These numbers share two factors: 2 and 3. So, we’ll multiply 2 and 3 to find the greatest common factor.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.