What people can mental arithmetic and kidnapping during a meeting, and I'll longing. Aura is able by itself.
Maybe the difference is going to open more and more mental arithmetic or regularly, on whether could turn the calculator immediately.


So! Reply [ProjectIDEEILE mental arithmetic training! !


Number block is falling down.
It is a game to extinguish and then adds in the number specified in the aspect it.

For example, in the beginner's class is
In the horizontal direction or the vertical direction, the falling blocks
It disappears when accustomed to "10 plus".

As well as add, or try a stacking pattern of considering chain,
Mental exercise, by all means in brain training.