(+,-,×(? ), ⊙) and other mathematical symbols are formed through long-term development. In the17th century,

Before it was widely used.

Addition symbol,

At first, the prefix p of English plus was used. In Germany, the English equivalent of "and" is used.

The word "et" With the prosperity of European commerce,

Writing "et" is too slow,

In order to speed up,

Write these two letters together,

So "et" slowly became "+".

So is subtraction,

Use English minus sign

(decrease)

Prefix m,

But also for the convenience of sketching.

It gradually became "-".

About 100 years after the appearance of "+",

Oughtred in Britain first used "×" as the multiplication symbol. It is said that multiplication symbols are derived from addition symbols. Because multiplication is developed from the addition of several identical numbers. For example, 13×5 is13+13+13+. That is to say, multiplication is a special addition operation.

Therefore, the addition symbol "+"is slightly changed, and it becomes the current multiplication symbol "×". Later, Leibniz thought that "×" was easily confused with χ, and suggested "?" As a multiplier, like this, "?" It has also been recognized. But some people think "?" Easily confused with decimal point,

Still insist on using X.

The symbol representing "division" was originally used in Varis, England.

Later, it was popularized in Britain. In addition to the original intention of integral,

For example,

100 apples were distributed to10 children.

How much does everyone get 100/ 10.

. The horizontal line in the middle of the symbol \u separates the upper and lower parts.

Vividly expressed the "point". But in Germany,

Leibniz used ":"to represent division.

It has been used until now. Later, people also used ":"to express proportion.

Because ratio and division have the same meaning. "