StackedFormula

++ All the answer to the questions are single digit! ++

It is a good day-to-day brain teaser.


■There are variety of modes to suit your mood
simple mode only consists of + and - operators.
If you're confident enough, you can also try operators consisting division and multiplication.

The calculation can range from using 2 numbers to 4 numbers.

However, the calculation will always result in single digit!

■ ranking function
We have introduced the LeaderBoard of GameCenter.

It is possible to check the rankings for each calculation formula.
Aim for the top rank!


■CREDITS
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http://dova-s.jp/bgm/play5417.html
http://dova-s.jp/se/play424.html
http://dova-s.jp/se/play229.html
http://soundeffect-lab.info/