About 足し算
制限時間内に、出題された足し算の問題に、答えていくゲームです。
暗算のトレーニングに最適です。
現在のところ、4桁同士の足し算までの問題となっています。 Within the time limit, to the problem of the addition, which is question, is the answer to go game.
Ideal for mental arithmetic training.
At present, it has become a problem to the addition of 4 digits with each other.