Certainly an interesting mechanic by forcing the player to figure out the operations instead of the numbers. But I found the presentation to be pretty lacking. Also I'm not sure if it's random or not, but I got some genuinely hard problems almost immediately. I could see this being a hit with math nerds, but frustrating a lot of other casual players

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 :)

Not a bad concept, would have liked to see a bit more than just doing some rough math in your head. :) Could have had some other cool mechanics built in for joining things.