Goodwill
Gcf Global: Adding and Subtracting Fractions
Tutorial demonstrates how to add and subtract fractions.
Other
Chili Math: Adding and Subtracting Fractions With Different Denominators
Goes through the steps involved in adding and subtracting fractions with different denominators and provides examples.
National Council of Teachers of Mathematics
The Math Forum: "Make One" Operations W Fractions Game
This card game will help students review the basic operations with fractions. The materials needed, the rules of the game, and several follow-up activities are provided here for the teacher as a lesson plan.
The Math League
The Math League: Fractions
This tutorial covers all types of fractions with simple explanations on how to work with them.
NumberNut
Number Nut: Decimals
Do you know what a decimal is and how it is related to fractions? Find out and practice your skills playing the related interactive games.
Khan Academy
Khan Academy: Combining Like Terms With Rational Coefficients
Practice combining like terms for expressions that have rational coefficients. This requires adding and subtracting fractions.