シマエナガと九九暗算!! 頭を使う脳トレ 計算 算数 数学

tom/とむ

Mental arithmetic training with the long-tailed long-tailed moth! Calculations to kill time! Reflexes! Train your calculation skills with the cute long-tailed long-tailed moth, and play brain training games using multiplication tables and mental arithmetic together to dramatically improve your arithmetic and mathematics skills!