**MathisFun** has great walk-throughs of concepts for Pre-Algebra. There are practice problems in the “Your Turn” section at the bottom of each page.

http://www.mathsisfun.com/algebra/index-pre-algebra.html

**CoolMath** has a lot of example problems with explanations and a couple of practice problems for each topic.

http://www.coolmath.com/prealgebra

**SparkNotes Math** has notes about all levels of math, divided up by topic, complete with practice problems and solutions.

http://www.sparknotes.com/math/

**Purple Math** has a goal of explaining math concepts in a user-friendly way that doesn’t sound like a textbook.

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