Students watch a video lesson about comparing fractions with unlike denominators. The tutorial includes an example using common denominators.

[Free Registration/Login may be required to access all resource tools.] This lesson covers solving rational equations using the LCD of the denominators to eliminate them.

Use this Least Common Denominator Calculator to find the lowest common denominator (LCD) of fractions, integers and mixed numbers. Finding the LCD is important because fractions need to have the same denominator when you are doing...

Part (a) of this task asks students to find and use two different common denominators to add the given fractions. The purpose of this question is to help students realize that they can use any common denominator to find a solution, not...

Part (a) of this task asks students to use two different denominators to subtract fractions. The purpose of this is to help students realize that any common denominator will work, not just the least common denominator. Part (b) does not...

[Free Registration/Login may be required to access all resource tools.] Order fractions from least to greatest and greatest to least using lowest common denominators.

Students learn about comparing fractions with unlike denominators. The video tutorial provides examples using models and common denominators. A quiz follows to test students' understanding of the concept.

In this lesson, 5th graders will learn how to add and subtract fractions and mixed numbers using models and by finding common denominators.

This section explores the process for adding and subtracting rational expressions. It primarily focuses on how to identify and use the Least Common Denominator to combine fractions with rational expressions.

Students add and subtract fractions using a common denominator.

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to compare fractions in word problems and determine which is bigger or smaller. Includes video demonstrating a sample...

Practice solving word problems by adding and subtracting fractions. The fractions used in these problems have like (common) denominators.

The LCM is a useful tool to use when comparing fractions and finding common denominators.

Calculate GCF, GCD, and HCF of a set of two or more numbers and see the work using factorization. An interactive calculator, explanations, and examples are included.

[Free Registration/Login may be required to access all resource tools.] Use cross products and LCDs to solve rational equations.

Add and subtract rational expressions like a pro after you use this site. Finding common denominators is made easy with this tutorial. Try the example problems to test your knowledge, then check the solutions. The 'Topic Index' page...

[Free Registration/Login Required] This flipchart teaches the steps necessary to add or subtract fractions with unlike denominators by getting a common denominator. It uses Activotes to assess getting the correct least common multiple,...

Students simplify fractions by dividing the numerator and denominator by the GCF (the greatest common factor). They check their work by using a calculator.

[Free Registration/Login may be required to access all resource tools.] Use a number line to find the differences of integers.

[Free Registration/Login may be required to access all resource tools.] In this lesson students use lowest common denominators to solve applications involving rational equations. Students watch a video tutorial, explore guided notes and...

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to compare fractions with different denominators and use the greater than or less than sign to show their relationship....

Students examine a map of a town, state, or country to see how it is divided into smaller areas. They then look for physical features that cause the area to be called a region. Finally they will compare their findings with another area...

Use your knowledge of fractions, to save animals who have gotten stuck in space. Game practices the following concepts: equal partitioning, addition, multiplication, mixed numbers, improper fractions, and common denominators. Teacher can...

Use the examples to find the least common denominator in order to add and subtract rational expressions.