Common Factors and GCF

Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...

A great resource for any math teacher covering multiples, factors or square roots; this worksheet walks young mathematicians through the logic behind factoring and square roots with a systematic set of problems which gradually increase...

These multiples share a few factors, but which one is the greatest? Scholars list the factors for various number pairs, first just indicating common factors. Next, they do the same but write down the greatest common factor. Finally,...

Give the class a prime example of using prime numbers. After reviewing prime factorization of numbers with the video, pupils use their knowledge to determine greatest common factors and least common multiples in the worksheet. The...

In this math worksheet, learners learn to find common factors and common multiples for sets of numbers. First students circle the common factors they see in the examples given. Then learners list the factors and multiples for each number...

When one method isn't enough to teach GCF, try two! This interactive webpage introduces factors and the prime factor tree to find the greatest common factor of two numbers. After the lesson, have learners click to try the two examples...

By creating a list of factors for two numbers, it is easier to see the greatest common factor. Each question in an interactive resource asks pupils to identify the greatest common factor for the numbers 24 and 36 in several different...

Here is a unique approach: youngsters use a Venn diagram to identify the greatest common factors of two numbers. This would be a good way to review the concept once they have been exposed to this topic. It includes sample problems that...

Using a word problem, the narrator helps describe how to find the greatest common factor. Not only does she explore the ways to identify the greatest common factor, she also shows how to determine when a math problem is asking for this...

Using the numbers 225 and 270, the narrator explains how to find the greatest common factor and the least common multiple. This presentation could be used in conjunction with other videos in a series exploring how to identify prime...