A cute little math-game. Me Gusta :)
Things I would change: Instead of "Press Any Key to Continue" at the end of the screen, make the player press a button. I only saw that I had 14 points and had to start a second round, to get a better look at the screen. And show the players the questions he/she got wrong too. Seeing a score is nice, but without seeing the mistakes (or at least the number of mistakes) the player won't see how well he/she really did.
But the game is nice :)