Students review how to compare fractions with unlike denominators. The video tutorial includes detailed examples.

This is an excellent resource to visually illustrate adding and subtracting fractions by finding the lowest common denominator.

The learning activity examines the least common denominator. Topics include fractions with denominators, common denominators, and the least common denominator. The resource consists of images, explanations, examples with solutions, and a...

[Free Registration/Login may be required to access all resource tools.] Compare fractions using lowest common denominators.

[Free Registration/Login may be required to access all resource tools.] In this learning module, students must find the least common denominator of two fractions in order to subtract one from the other. Includes video demonstrating a...

Practice rewriting fractions to have the same denominator. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice finding common denominators. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

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 learn about finding a common denominator in fraction addition and subtraction.

[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 put them in order. Includes video demonstrating a sample problem...

Demonstrates how to add and subtract fractions where the denominators are different. Includes sample problems to try.

[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.

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...

Definitiion of a common denominator with examples.

A graphing calculator lesson focusing on common denominator. Lesson contains detailed examples, visual demonstrations with key functions, and practice problems. Acrobat Reader required.

[Free Registration/Login may be required to access all resource tools.] Evaluate numerical expressions with fractions by renaming multiple terms with a lowest common denominator.

Students add and subtract fractions using a common denominator.

[Free Registration/Login Required] This flipchart presents a method for finding the common denominator of fractions.

[Free Registration/Login may be required to access all resource tools.] In this learning module, students solve word problems where they must add and subtract fractions with different denominators. Includes video demonstrating a sample...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students add and subtract three fractions with different denominators. Includes video demonstrating a sample problem [2:41] and a set of...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students subtract mixed numbers that have different denominators. Includes video demonstrating a sample problem [2:49] and a set of practice...

Demonstrates how to compare fractions by making the denominators the same. Includes sample problems to try.

Boost your ability to add number line fractions with unlike denominators with this interactive math game. A basic understanding of factors is key to success. Instructions with detailed examples are easily accessible.