1.世纪、年代、年、月、日、时刻用阿拉伯数字,如20世纪80年代。年份必须用全称,如:1989～1999年,不写成1989～91年。 2.计量和统计数字用阿拉伯数字。如:0.5、30年、2万台、3个人、1/3、3％、10多万…… 3.序数词和编号中的数字用阿拉伯数字。如:新外大街86号、13次特快、第2卷、第5页、第11届……。 4.书写小数点前或后5位以上数字,采用3位分节法, 1. Century, year, year, month, day, hour with Arabic numerals, such as the 1980s. Year must use the full name, such as: 1989 ~ 1999, do not write 1989 ~ 91 years. 2. Metrology and statistics using Arabic numerals. Such as: 0.5, 30 years, 20,000 units, 3 individuals, 1/3, 3%, more than 100,000 ...... 3. The ordinal numerals and numbers in the figures with Arabic numerals. Such as: New Street, No. 86, 13 Express, Volume 2, Page 5, the 11th ... .... 4 before or after the decimal point to write more than 5 digits, using 3 sub-section method,