Here's a new freeware math game for Palm and Windows Mobile users: ArithmeTick. The game helps student become faster at addition, subtract, multiplication, and division. Players can choose which operations will be used and the skill level. Once the game begins, it's a race to get as many problems correct as possible. Players are awarded up to 10 points for each problem depending on how quickly the problem was answered. Also, players are awarded extra time for each problem solved correctly. Challenge problems worth 50 points are offered at the end of each level. Since there is no erase button, you should know that if you enter a wrong number by mistake you can clear your current guess by tapping on the problem.
Let's see how high those scores can go! Offer this game to students and post their high scores in a comment to this post.