Train your mental arithmetic ability with MindCalc!
This is NOT your standard "what is 7 * 13?" type of game but here the result is already known and an arithmetic operator is given. Now you need to pick two numbers out of 9 to make this equation happen.
The faster you solve your equation, the more points you gain.
But if you make a mistake you need to start all over - so be careful!
For an extra kick choose the highest difficulty where your score will be reset to zero in case you run out of time.