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: 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]
Math Mammoth
Math Mammoth: Least Common Denominator
Introduces the topic of Least Common Denominator by first looking for a common multiple of the denominators in two fractions. [11:05]
Khan Academy
Khan Academy: Adding Mixed Numbers
Demonstrates how to add two mixed numbers by adding the whole numbers separately and then finding the least common denominator for the fractions and adding those. The sum of the fractions is then simplified. [2:20]
Khan Academy
Khan Academy: Finding Common Denominators
Explains how to find the least common denominator for the fractions 2/8 and 5/6. [4:42]
Math Playground
Math Playground: Adding Fractions With Different Denominators
This video illustrates how to add fractions that have different denominators.
Khan Academy
Khan Academy: Equivalent Fractions: Finding Common Denominators
This video shows how to rewrite two fractions as fractions with a least common multiple.
Sophia Learning
Sophia: Subtracting Fractions With Unlike Denominators
Students review how to subtract fractions with unlike denominators. The tutorial includes a detailed example.
Sophia Learning
Sophia: Adding Fractions With Unlike Denominators Regrouping
Students watch a video lesson about adding fractions with unlike denominators. The tutorial includes examples and a quiz follows to test students' understanding of the skill.
Sophia Learning
Sophia: Adding Unlike Fractions Tutorial
Determine the least common denominator in order to add two unlike fractions.
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]
Math Antics
Math Antics: Finding a Common Denominator: Ecd
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. [5:07]
Math Antics
Math Antics: Common Denominator Bottom Number
Gain a basic understanding of how to add or subtract fractions through this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [4:21]
Khan Academy
Khan Academy: Subtracting Mixed Numbers Word Problem
This video explains how to subtract two mixed numbers 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: Finding Common Denominators
The teacher rewrites 2/8 and 5/6 to have the same denominator.
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 10
This lesson covers how to find the lowest common denominator of two or more fractions. It is 10 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 13
This lesson covers how to find the lowest common denominator of two or more fractions. It is 13 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 14
This lesson covers how to find the lowest common denominator of two or more fractions. It is 14 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 2
This lesson covers how to find the lowest common denominator of two or more fractions. It is 2 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 3
This lesson covers how to find the lowest common denominator of two or more fractions. It is 3 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 4
This lesson covers how to find the lowest common denominator of two or more fractions. It is 4 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 8
This lesson covers how to find the lowest common denominator of two or more fractions. It is 8 of 14 in the series titled "Finding the Lowest Common Denominator."
Sophia Learning
Sophia: Finding the Lowest Common Denominator: Lesson 9
This lesson covers how to find the lowest common denominator of two or more fractions. It is 9 of 14 in the series titled "Finding the Lowest Common Denominator."