flash 100

For mental exercises, do this easy "add", "negative", "multiplication", and "division"!
Cipher quickly, and compete with time!


■Time Attack mode
［20］…The time you took and the number of correct answers out of 20 questions will be clocked up.
［50］…The time you took and the number of correct answers out of 50 questions will be clocked up.
［Challenge］…Compete the time you took and the number of correct answers out of 100 questions.
（OnlineRanking-enabled）

■Mental Calculation mode
The math formula will be disappeared after a certain period of time.
Try to remember the formulas and answer them.
You can choose from three levels ; 20questions, 50questions, and 100questions.