ZeroSum mathematics puzzle

[ About the game ]

Remember suggests that random number and priority of the arithmetic and
Finally a combination of numbers and operators in the game to create a zero
Improve the mathematical ability and memory
The game, which was a fun brain training.

Different from the size of the speed and the numerical value of the distance to be presented according to the degree
of difficulty,
You can change the default difficulty level is set at Medium and options (settings).

The emergence of the arithmetic operators "+", "-", "×", "÷" is set and the Options (Settings) "+", "-" can be
changed to.