Test your beginning addition skills and race the bat. Each time you click on the correct sum the cat will move forward. Each incorrect click will cause him to go backwards. The first runner to reach the edge of the screen wins the race. Winning the race will cause the level to increase (up to 3) or you can click on a level number to set it for the next race.
This project has click-able numbers that change to Yes when you click on the correct sum or X if your answer is wrong. The project has prevention of accidental double-clicks, and a non-competitive bat who even pauses as the problem is changed. There are three click-able levels of play. This is based on MrHills project http://scratch.mit.edu/projects/31372/ (Click the green flag to start.)
