List of Roman numerals / numbers.

用来表示阿拉伯数字中的一，二，三，四，五等等的。 比如一是Ⅰ，二是Ⅱ，三是Ⅲ，四是Ⅳ，五是Ⅴ，六是Ⅵ，七是Ⅶ，八是Ⅷ，九是Ⅸ，十是Ⅹ。 在五笔输入状态下，点开小键盘，再点一下数字序号就出来了。 罗马数字是欧洲在阿拉伯数字（实际上是印度数字）传入之前使用的一种数码，现在应用较少。 它的产生晚于中国甲骨文中的数码，更晚于埃及人的十进制数字。 但是，它的产生标志着一种古代文明的进步。 例如：6 用罗马数字可以表示为 Ⅵ；4 用罗马数字表示为 …

对应阿拉伯数字，也就是现在国际通用的数字为：Ⅰ是1，Ⅱ是2，Ⅲ是3，Ⅳ是4，Ⅴ是5，Ⅵ是6，Ⅶ是7，Ⅷ是8，Ⅸ是9，Ⅹ是10。 可以通过打开软键盘打出罗马数字。

罗马数字的基本字符：i-1，v-5，x-10，l-50，c-100，d-500，m-1000。 罗马数字的记数方法： 1、相同的数字连写、所表示的数等于这些数字相加得到的数、如：Ⅲ=3；

The notations IV and IX can be read as "one less than five" (4) and "one less than ten" (9), although there is a tradition favouring the representation of "4" as " IIII " on Roman numeral clocks. [1] Other common uses include year numbers on monuments and buildings and copyright dates on the title screens of films and television programmes.

In particular, instead of using four symbols to represent a 4, 40, 9, 90, etc. (i.e., IIII, XXXX, VIIII, LXXXX, etc.), such numbers are instead denoted by preceding the symbol for 5, 50, 10, 100, etc., with a symbol indicating subtraction. For example, 4 is denoted IV, 9 as IX, 40 as XL, etc.

6 天之前 · Usually only three identical symbols can be used consecutively; to express numbers beginning with a 4 or a 9, a symbol is placed before one of greater value to subtract its value—e.g., IV = −1 + 5 = 4 and LIX = 50 -1 + 10 = 59. The exceptions are 4,000, which is sometimes written as MMMM, and clocks, which usually display 4 as IIII.

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