Adding fractions with negative numbers is the same as adding whole numbers with negatives. Find a common denominator when adding fractions with negative numbers with help from a math author.

Join Professor McComb, Adam, Diffy, Delta, Polly, Denom & Ator as they travel to Parallel-a-Land to learn about adding fractions. Featuring special guest star N.O.I.D. (Number One in Disguise). (12:13)

In this video students learn to add or subtract fractions using the least common denominator, which is the least common multiple for the denominators of the fractions. Once the fractions are given a common denominator by multiplying the numerator and... denominator of each fraction by the appropriate number, then the fractions can be added or subtracted by adding or subtracting the numerators, and leaving the denominator the same. Sample lesson only.(2:55)[more]

From pbslearningmedia.org, produced by Thirteen/WNET New York

In this video segment from Cyberchase, the CyberSquad has to help Shari Spotter make a batch of Cosmic Crumpets in order to give the masters at Frogsnorts their power. The recipe they have is for four crumpets, but they need to make eight crumpets. E...verything in the recipe has to be doubled, including some tricky fractions which Shari and the CyberSquad find they must convert from improper fractions to mixed numbers. (6mins)[more]

This short lesson shows a teacher walking students through a addition problem with fractions. It includes how to convert an improper fraction to a mixed number. The teacher works the problem as it is explained in the video.

How to add fractions, done at a whiteboard.This video by Duane Habecker is part of the video collection at NextVista.org (http://nextvista.org), a proud partner of Curriki.

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