Curated OER
What's the Least Common Denominator?
Help your class take on the least common denominator by providing them with this informational video. The video gives a definition of the least common denominator and includes an example using two algebraic fractions. This is definitely...
Curated OER
How Do You Solve an Equation with Variables on Both Sides and Fractions?
Fractions and variables on both sides of the equation? Oh my! There are one hundred and one steps to solving this equation. Not really, but now that I have your attention, I recommend you watch this video closely and follow the...
Curated OER
Basic Math: Lesson 6 - #10 - Subtraction of Fractions
This is a full lesson created to assist learners in subtracting mixed numbers and fractions. The instructor speaks quickly and fails to explain his thinking completely. He refers to LCD, completes problems involving negative numbers, and...
Curated OER
What's the Least Common Denominator?
Help your class take on the least common denominator by providing them with this informational video. The video gives a definition of the least common denominator and includes an example using 2 algebraic fractions. This is definitely a...
Curated OER
How Do You Solve a Rational Equation?
There are a lot of steps in this problem. But just like walking up a flight of stairs, you should take one step at a time, so too in the solving of this problem. The instructor explains each step and what to do to move to the next one.
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Algebraic Expressions Lcm
This video explains how to find the least common multiple of algebraic expressions. Practice problems are available. [4:40]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Subtracting Mixed Numbers 2
This video explains how to subtract two mixed numbers by converting them to improper fractions. Practice problems are available. [3:59]
Khan Academy
Khan Academy: Algebra: Adding and Subtracting Rational Expressions Example 2
Video shows example of adding and subtracting rational expressions. Includes discussion of using the least common multiple of the denominators for a common denominator. [2:56]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Comparing Fractions 2
This video shows how to compare two fractions using a several methods. Practice problems are available. [7:08]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Adding and Subtracting Fractions
This video shows how to add and subtract fractions with like and unlike denominators. Practice problems are available. [9:49]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Least Common Multiple (Lcm)
This video shows how to find the least common multiple of three numbers using lists of multiples or prime factorization. Practice problems are available. [5:23]
Sophia Learning
Sophia: Finding the Lowest Common Multiple: Lesson 1
This lesson demonstrates the comparison of multiples of two or more numbers to find the lowest common multiple. It is 1 of 11 in the series titled "Finding the Lowest Common Multiple."
Khan Academy
Khan Academy: Expressions: Algebraic Expression Least Common Multiple
This video explains how to find the least common multiple of algebraic expressions.
Math Playground
Math Playground: How Do You Find the Gcf and Lcm?
This video illustrates how to find the greatest common factor (GCF) and the least common multiple (LCM) of two numbers.
Virtual Nerd
Virtual Nerd: What Is a Multiple?
This tutorial serves as an introduction to multiples and explores how to find multiples of a given number and the least common multiple between numbers. [4:11]
Khan Academy
Khan Academy: Equivalent Fractions: Finding Common Denominators
This video shows how to rewrite two fractions as fractions with a least common multiple.
Khan Academy
Khan Academy: Equivalent Fractions: Ordering Fractions
This video shows how to order five fractions from least to greatest by finding common denominators.
Imagine Learning Classroom
Learn Zillion: Find the Gcf and Lcm Using Prime Factorization
In this lesson, you will learn how to find the GCF and LCM of two whole numbers by using their prime factors. [4:40]
Math Antics
Math Antics: Finding a Common Denominator Lcd
Gain a basic understanding of how to find a common denominator by watching this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [5:22]
Khan Academy
Khan Academy: Adding Mixed Numbers Word Problem
his video showing how to add two mixed numbers with unlike denominators in the context of a word problem.
Khan Academy
Khan Academy: Mixed Number Addition and Subtraction: Subtracting Mixed Numbers
This video explains how to subtract two mixed numbers.
Khan Academy
Khan Academy: Least Common Multiple: Least Common Multiple (Lcm)
Least Common Multiple (LCM)
Other
Mario's Math Tutoring: Lcm & Gcf of Monomials
Learn how to find the greatest common factor and the least common multiple in this math video tutorial. Looks at some examples involving monomials containing numbers and variables. [6:10]
Art of Problem Solving
Art of Problem Solving: Lcm Times Gcd
Video tutorial uses examples and tricks to reinforce understanding of Least Common Multiple and Greatest Common Divisor. [6:26]