The game it's very easy you need to add/substract/multiply/divide to get the required number.
The game has two phases
1. at the very first levels you need to add or substract numbers in order to get the required number
2. as you forward in levels the game starts to be more challenging you need to multiply/divide/raise to power to get the required number
After you finish the tutorial the timer will start at every new level. You will need to solve the problem in less than in a minute. You may have the possibility to undo your action by pressing again the number.
Don't forget to challenge your friends by sharing your score on your facebook's wall or in other places.
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