What are the ways to write numbers?

1, Chinese lowercase numbers: one, two, three, four, five, six, seven, eight, nine.

2. Capitalized figures in China: zero, one, two, three, four, five, six, seven, eight and nine.

3. Arabic numerals: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

4. Roman numerals use seven Roman letters as numerals, namely I (1), X( 10), C (100), M (1000), V (5), L(50) and D.

Standard writing of Arabic numerals:

(1) Each number should be symmetrical in size and smooth in strokes; Every number is independent, tangible and obvious, so it can't be written in Lian Bi.

(2) The writing arrangement is orderly, and the font should be obliquely written from the top right to the bottom left.

(3) Each number written should be close to the bottom line, not on it.

(4) Leave half an Arabic numeral between adjacent digits in the same transaction, but no spaces are allowed.

(5) Numbers other than "4" and "5" must be written in one stroke, and digital strokes cannot be artificially added.