Interactive website for games, flashcards, worksheets, and homework help http://www.aplusmath.com/
For more math practice http://www.aaamath.com/
Helpful site for you to brush up on your study skills http://joelheffner.com/studyology/index.htm
Try this website to help with math homework. http://www.mathforum.org/dr.math
A variety of topics in game format http://www.coolmath4kids.com
Various types of grid paper http://www.dillustrated.com/Resources/Grids.htm
You can also go to the arcade for more math games http://www.funbrain.com/tens/index.html
Be sure to select Mathematics as the subject http://nces.ed.gov/nceskids/eyk/index.asp?flash=true