百ひゃくます計けい算さん

noun

100-square calculation; grid-based arithmetic drill

A learning method using a 10×10 grid for repetitive practice of basic arithmetic (addition, subtraction, multiplication, etc.), often used in Japanese elementary schools to build speed and accuracy.

• 毎まい朝あさ、百ひゃくます計けい算さんをしてから授じゅ業ぎょうが始はじまります。

  Every morning, class starts after doing 100-square calculations.

• 百ひゃくます計けい算さんでかけ算ざんの練れん習しゅうをすると、暗あん算ざんが速はやくなります。

  Practicing multiplication with 100-square calculations makes mental arithmetic faster.