Arabic numerals
Arabic numerals (also called Indian numerals) consist of ten counting symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * *. Arabic numerals were first invented by ancient Indians, then spread to Europe by Arabs, and then modernized by Europeans. People think it was invented by Arabs, so people call it "Arabic numerals".
Arabic numerals consist of ten counting symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * *. Take the position value method, the high position is on the left, the low position is on the right, and the writing is from left to right. With the help of some simple mathematical symbols, this system can clearly represent all rational numbers. In order to express extremely large or extremely small numbers, people have created scientific notation on the basis of Arabic numerals.
Knowledge expansion:
Arabic numerals can be easily changed by changing the position of the decimal point. Therefore, in special occasions (such as banks), it cannot completely replace capitalized Chinese characters and numbers.
In sci-tech books and periodicals, Arabic numerals are frequently used because of their simple strokes, scientific structure, clear images and few groups. Whether their use is correct and standardized is directly related to the quality of sci-tech periodicals.
The "0" before the decimal point of pure decimal cannot be omitted. Whether it is narrative or chart, the "0" before the decimal point of pure decimal cannot be omitted, and numbers in the formats of ".27, .39" cannot appear.
Arabic numerals cannot be used with chinese numerals, except "Wan", "One" and Chinese symbols with the prefix SI. For example,13 million can be rewritten as13 million, but it cannot be written as13 million.
For numbers with 4 digits or more, three-digit segmentation method is used when writing. The size of the physical quantity. Physical quantities must use Arabic numerals, and the units of measurement after the numerals must use legal units of measurement in China, such as 3kg, 45m, 2min, etc.