Crazy Math is one of the most educational math games. Test how quickly you can perform math operations by selecting the difficulty level. If you can get over 50 points in the hard section, you are really a very smart person. math game, mathematics, quick math, math skills, arithmetic, calculation, brain training, educational game, online math game, math challenge, number games, clicker game, math practice, speed math, multiplication, division, addition, subtraction, mathematics game