playmathsmash.com
Math Smash: Animal RescueMath Smash: Animal Rescue is a a fun new way to practice Math! Use your math skills to smash blocks and rescue critters trapped in 5 unique worlds. You'll get coins for answering math questions correctly, and you can use these coins to buy special power-ups to smash your way through levels even faster.
http://www.playmathsmash.com/