The game was good, makes you think :) and is really simple and easy to use. Maybe you should offer a mode without a timer, and also various difficulty levels would be nice with square roots , logarithms and stuff. But all in all a very nice game that makes your gray matter move and not just your fingers :)
Its a math game!!!!
wow, i didn't think that there could be a game like this. ummm, it reminded me that i need to be working on my math. a lot more. Which is a good thing. so 9 stars for you and a 4 out of 5.
but get rid of the chirping birds.... something different that dosent distract you from quick math....