Mental arithmetic training application.
If you win 10 games in a row, you will go to the next level.
level1 : 13÷1, 17÷1, ....
level2 : 24÷2, 38÷2, ...
level3 : 36÷3, 51÷3, ....
level4 : 52÷4, 76÷4, ...
level5 : 65÷5, 90÷5, ...
level6 : 90÷6, 108÷6, ....
level7 : 98÷7, 133÷7, ...
level8 : 120÷8, 136÷8, ...
level9 : 126÷9, 153÷9, ...
level10 : Practice
In Japan, 8-9 years old (3rd grade)