Nice little game with a fast pace. I really liked the different games. Sometimes it was a bit hard to find out what you had to do, but I think this is part of the challenge. If the time ran out you had not really a good feedback if you now succeeded or not. I would definitely improve that. Additionally if you pressed ok or logged in the result early then you still had to wait for the timer to run down. I would directly go to the next game, as this would fit the fast pace of the game.
Did you get inspired by my "Accountant" mini game, when you created the "Balance Sheet" mini game :D? Looks very similar.
Congratulations to this entry.