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

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...

Add two fractions with the like denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Add two fractions with the like denominators.

Brush up on your math skills pertaining to subtracting mixed numbers with like denominators then try some practice problems to test your understanding.

[Free Registration/Login may be required to access all resource tools.] Find the difference of fractions with like or common denominators.

[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.

In this exercise, questions provide practice with adding fractions with common denominators. Immediate feedback is given and hints or a video are available if needed.

Solve a subtraction problem with two fractions with like denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, questions provide practice with subtracting fractions with common denominators. Immediate feedback is given and hints or a video are available if needed.

[Free Registration/Login may be required to access all resource tools.] This video gives steps of finding common denominators and then adding and subtracting multiple fractions together. After the video, there are practice problems...

[Free Registration/Login may be required to access all resource tools.] For this learning module, students must compare fractions where the numerators or the denominators are the same and state which fraction is smaller or larger....

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

This personal site explains how to compare fractions with the same denominator, gives examples, and includes games to practice the new skill. CCSS.Math.Content.3.NF.A.3.d Compare two fractions with the same numerator or the same...

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...

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...

Definitiion of a common denominator with examples.

Demonstrates how to add fractions where the denominators are the same. Includes sample problems to try.

This resource contains information about fractions and includes ratios, equivalent fractions, basic operations, and reciprocals. Several links for practice problems are also included, along with links to a post and pretest.

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

This personal site explains how to add fractions with different denominators by finding the least common denominator. Gives problems and games to practice this skill.

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

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