けいさん白書-数学/暗算トレーニング-

A calculation training app that solves a lot of mental calculations within the time limit.
Activate your brain by improving your judgment and concentration!

◆ Rule explanation
Solve many problems within 30 seconds.
The calculation method can be selected from [Addition/subtraction/multiplication/division].
You can select the difficulty level from [Easy/Normal/Slightly difficult/Difficult].

◆ How to calculate the score
[+5 points] for each correct answer. [-3 points] for each incorrect answer.

◆ Collection of nostalgic school items
You can get points depending on the score results.
The collection will increase when certain points are accumulated.