注目の話題: 電車の混雑時にスマホ。どうおもう？; まだ10時すぎなのにw; 私はいい人じゃないです。

ＡｄｉａｒｙｉｎＥｎｇｌｉｓｈ

No.240　10/01/24 21:11
蚤野心蔵 ( 40代 ♂ IJ7P0b ) あ+あ-

To 幸せ者さん

Good evening again.😁

The other day,we talked about mathmatics and arithmetic,so I'm going to talk about the difference between them.😃

We learned arithmetic when we're in a elementary school,for we study the basic thing in the subject,it seems to be similar to that we have to learn the japanese letters,hiragana,katakana in the Japanese language.
🏫

We learned how to calculate,addition,subtraction,multiplication and division.🏫

We learned the other things in the arithmetic,to say the multiplication tables (九九を言う),how to calculate fractions,(分数),a method of calculation based on figuring the number of cranes and tortoises from the totals of their legs.🏫

Though making unnecessary addition,we have to learn by heart 9の段. On the other hand Americans had to learn by heart to 12の段。It seems to be a remain of the duodecimal system.(12進法).😚

To be continued.If you feel boring, I'm sorry. Have a good night.😁