■ How to play ■
All 4 modes (addition, subtraction, multiplication, division) are prepared.

1. Choose your favorite calculation method
2. Choose difficulty level
3. Game Start!

Let's solve many questions within the time limit.
Every time you answer correctly, time and score will increase.
Be careful as time decreases if it is incorrect!
You can get a high score by clearing difficult questions.
Speedy and accurate solving is a hint to high score.

Since we can review the question after the end of one game,
It is also possible to recheck the question solved.

Please use it for your daily brain train.