けいさん白書

A calculation power training app that allows you to solve many mental calculations within a time limit.

Activate your brain by improving your judgment, concentration, and mental arithmetic skills!

◆How to play

Aim for your personal best by solving as many problems as possible within the 30 second time limit!

You can select the calculation method from [Addition/Subtraction/Multiplication/Division].

You can select the difficulty level from [Easy/Normal/Slightly Difficult/Difficult].

Solve as many problems as possible within the 60 second time limit and compete for points with players from all over the world!