Roman Numerals

Roman numerals are written using the seven letters of the alphabet (shown in Table)

There are certain rules when using Roman numerals:

Letters are arranged from the largest to smallest.

Numbers are added to arrive at the value.

• For example XVI is X (10) +V (5) + I (1) = 16.

When a smaller number precede a larger number, the smaller is subtracted from the larger.

• For example: IX is 1 (I) subtracted from 10 (X) = 9.

Roman Numeral	Number
I	1
V	5
X	10
L	50
C	100
D	500
M	1000

For bigger number, i.e ≥ 5K, an overbar is used