Sophia: Finding the Gcf of Multiple Numbers: Lesson 3

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...

Greatest common factor, least common multiple, prime factorization, multiples, factors, oh my! The instructor in this video shows how to make different lists of factors to find the greatest common factor. So take a peak and see how to...

Here's a quick review on how to use a prime factor tree to find the greatest common factor of two numbers. This is one of the simplest ways to find the greatest common factor. So watch this video to get a refresher on how to do prime...

Use prime factorization to find the greatest common factor of three given values. What are the factors that all three given numbers have in common? Identify them, and then multiply together to get the greatest common factor. Just like...

Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure...

Use prime factorization to find the greatest common factor of four given values. What are the factors that all four given values have in common? Identify them, and then multiply together to get the greatest common factor. Just like that....

What is the greatest common factor of two terms in an expression? First prime factor each of the terms. Then find the factors that they have in common. Multiply if needed. That is how to find the greatest common factor. Watch the video...

This lesson demonstrates how to find the greatest common factor of more than two numbers. It is 2 of 13 in the series titled "Finding the GCF of Multiple Numbers."

This lesson demonstrates how to find the greatest common factor of more than two numbers. It is 7 of 13 in the series titled "Finding the GCF of Multiple Numbers."

This lesson demonstrates how to find the greatest common factor of more than two numbers. It is 9 of 13 in the series titled "Finding the GCF of Multiple Numbers."