In Speed Up Calculation - The Operators, here you have to mentally prepare for calculation and also require the speed of how fast you give correct answer. there is four basic operator here use addition,subtraction,multiplication,and division so this game is very useful to improve your maths calculation in speed. one incorrect answer can move you out of the game so its important to give only a right answer. its also very useful for kids so they can improve their knowledge.download and play! enjoy!!