Math Game: Quick Calculate Math

How good are you in simple calculation? Test it out in the "Quick Calculate". In this game you will be given simple Mathematically equations. Quickly you solve, more you will score in this game. With each equation you solve, the next one will be tougher.
You can use the Mouse of your computer or Keyboard to type your answer.  At the end you can submit your score and compare it with others across the world.