What are the basic numbers that Roman numerals consist of

Roman numerals originated in ancient Rome. There are 7 characters in total: ].

i,v,x,l,c,d,m

The corresponding Arabic numerals are expressed as:

There are seven Roman numerals, namely I (1), V (5), X (10), L (50), C (100), D (500), M (1000). Any positive integer can be represented according to the following rules.

Roman numerals are a type of numeral used in Europe before the introduction of Arabic numerals, which are now less widely used. It was produced later than the digits in the Chinese oracle bone inscriptions, and even later than the decimal digits of the Egyptians. However, its creation marked the progress of an ancient civilization.

It's just that there is no number 0.

Explanation of terms: Roman numerals predate Arabic numerals by more than 2000 years and originated in ancient Rome.

About 2,500 years ago, when the Romans were still in the early stages of cultural development, they used their fingers as a calculation tool. For the sake of representation.

One, two, three, and four objects stretched out.

One, two, three, four fingers;It means that five objects stretch out a hand;It means that ten objects stretch out two hands. This habit has been used by mankind to this day. People often use this gesture to represent numbers in conversation.

At that time, in order to keep track of these numbers, the Romans drew on sheepskin instead of finger numbersWhen it is meant to represent a hand, it is written in the shape of " ", which indicates the shape of the big finger and index finger openWhen it means two hands, it is drawn in the shape of "shaped", and later it is written as one hand up and one hand down" This is the prototype of Roman numerals.

Arabic numerals 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, lowercase: , one, two, three, four, five, six, seven, eight, nine, ten, hundred, thousand, million, billion, trillion, jing, yi, zi, 穰, ditch, stream, zheng, load, pole.

Capitalization: zero, one, two, three big covers, shed imitation demolition, Wu, Lu, Qi, 捌, Jiu, pick, Bai, Qian, million, billion, trillion, Beijing, Yuan, Zi, Sui, ditch, stream, positive, load, pole.

Heavenly stems: A, B, C, D, Chain jujube E, H, G, Xin, Non, Dec.

Earthly branches: Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai.

Zodiac signs: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Sheep, Monkey, Rooster, Dog, Pig.

廿 (niàn, 20, capital: read), 卅 (30, sà), 卌 (40, xì) 皕 (bì, 200).

II II III IV V VI are Roman numerals.

It was produced later than the digits in the oracle bone inscriptions of the Chinese people, and even later than the decimal digits of the Egyptians. However, its creation marked the progress of an ancient civilization.

Common Uses for Roman Numerals:

The most common Roman numerals are the dial symbols of clocks: ,

Periodic table: Ia, IIA, IIIA, IVA, VA, VIA, VIIA, IB, IIB, IIIB, IVB, VB, VIB, VIIB, VIIII.

The corresponding Arabic numeral (which is now the number used internationally) is ......

Roman numeral notation:

1. The same number is written in a row, and the number represented is equal to the number obtained by adding these numbers, such as: =3;

2. The small number is on the right side of the large number, and the number represented is equal to the number obtained by adding these numbers, such as: =8, =12;

3. Small numbers (limited to i, x and c) are to the left of large numbers, and the number represented is equal to the number obtained by decreasing the large number, such as: =4, =9;

4. During normal use, the number written in a row shall not be repeated more than three times;

5. Draw a horizontal line on top of a number to indicate that the number is expanded by 1000 times.