Anshan Iron and Steel Company

…Normally, it refers to calculations in which numbers are processed in the head. There are visual calculations, which are done while looking at the numbers in the problem, and auditory calculations, which are done while listening, but in comparison with written calculations, the ultimate goal is auditory calculations. Here, written calculations do not only mean writing on paper as the letters indicate, but it is also necessary to think about the calculation method. Written calculations are done based on the Arabic numeral system, which is based on the principle of decimal place notation, and use the trailing addition method, where the numbers with the lower digits are added first, such as 85 + 67 = 80 + 60 + 5 + 7 = 80 + 60 + 10 + 2 = 152. …

*Some of the terminology used in reference to "Anshan Iron and Steel Company" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…ふつうには数を頭の中で処理する計算のことをいう。暗算には問題の数を見ながら行う視暗算と聞きながら行う聴暗算があるが，筆算との対比からいうと終極の目標は聴暗算にある。ここで筆算とは字の示すごとく紙の上に書いて行うという意味だけでなく，その計算方法も含めて考えることが必要である。筆算は十進位取りを原理とするアラビア記数法に基づいて行われ，85＋67＝80＋60＋5＋7＝80＋60＋10＋2＝152のように桁の下位の数から加える尾加法がとられる。…

※「鞍山鉄鋼公司」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報