Mental arithmetic training application.
If you win 10 games in a row, you will go to the next level.
level1 : 24÷1, 28÷1, ....
level2 : 46÷2, 54÷2, ...
level3 : 63÷3, 84÷3, ....
level4 : 92÷4, 108÷4, ...
level5 : 120÷5, 135÷5, ...
level6 : 126÷6, 156÷6, ....
level7 : 154÷7, 189÷7, ...
level8 : 184÷8, 208÷8, ...
level9 : 178÷9, 252÷9, ...
level10 : Practice
In Japan, 8-9 years old (3rd grade)