1 Arabic numerals: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1000,1000;

2 Chinese: one, two, three, four, five, six, seven, eight, nine, ten, hundred, thousand, ten, billion;

3 Chinese words: one, two, three, four, five, six, seven, eight, nine, pick up, hundred, thousand, ten thousand, hundred million, yuan (circle), angle, minute, zero and whole;

Roman numerals were used in Europe before the introduction of Arabic numerals. Roman numerals use seven Roman letters as numerals, namely I (1), X( 10), C (100), M (1000), V (5), L(50) and D (500).

Extended data:

Numbers are both unfamiliar and familiar terms. It consists of ten letters from 0 to 9. Numbers not only include counting, but also have rich philosophical connotations.

1: It can be seen as the number "1", a stick, a crutch, an upright gun, a candle and a one-dimensional space. ...

2. It can be seen as the number "2", a wooden horse, a kneeling person, a steep slope, a slide and a goose. ...

3. Can be seen as the number "3", two fingers, breasts, cross-eyed, branches, inverted W. ...

It can be seen as the number "4", a squatting person, a small sailboat, a small red flag and a knife. ...

5: Can be seen as the number "5", big belly, little ass, notes. ...

6. It can be seen as the number "6", a tadpole, a person with a head and an arm exposed. ...

7. It can be seen as the number "7", crutches, small tables, benches, fork roads, T-shaped objects and sickles. ...

8. It can be seen as the number "8", the mathematical symbol "∞", peanuts, collars and snowman. ...

9: Can be seen as the number "9", a person sitting next to it, a small bud. ...

0: can be regarded as the number "0", chubby person, round "○", sole, feet, two-dimensional space, thin face, eggs. ...

Numbers can be divided into real numbers and imaginary numbers, real numbers can be divided into rational numbers and irrational numbers or integers and decimals, and any rational number can be divided into numbers.