Lumos Video Store
This page provides a list of educational videos related to LCM. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to LCM.
Finding LCM by Listing Factors
By Vanessa Graulich
Learn to find LCM of numbers by listing their factors.
GCF and LCM word problems
By Khan Academy
Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it.
Least common multiple
By Khan Academy
This least common multiple example gives us 3 numbers from which to find the lcm. This is a challenge, but fun. Do it with us!
Finding the least (lowest) common multiple (LCM) using the upside down birthday cake method
By Nancy Foote
You can find the least common multiple (lowest common multiple) simply and quickly by using the upside down birthday cake method that this video shows.
Solve equations with two rational expressions
By Khan Academy
Sal solves the equation 5/(2x)-4/(3x)=7/18 by first finding the LCM (least common multiple) of 2x and 3x.
Learn Greatest Common Factor (GCF) & Least Common Multiple (LCM) - [7]
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!
Least common multiple
By Khan Academy
Sal finds the lcm (least common multiple) of 12 and 36, and of 12 and 18. He shows how to do that using the prime factorization method, which is a just great!
Greatest Common Factor - GCF - YourTeacher.com
By yourteachermathhelp
Youtube Presents Greatest Common Factor - GCF - YourTeacher.com an educational video resources on english language arts.
Using upside down birthday cake to find the greatest common factor (GCF)
By Nancy Foote
This is an alternate way to determine the greatest common factor (GCF) for a set of numbers using the upside down birthday cake method.
How To Find Greatest Common Factor (GCF)
By Joel Walkley
Youtube Presents How To Find Greatest Common Factor (GCF) an educational video resources on english language arts.
Math 8 Honors: Chapter 8- Section 1: GCFs and Factorization
By Megan Frantz
Determining GCFs and Factorization