Roman Numbers

Roman numbers

Roman numbers used various symbols to represent quantities. Roman numbers didn't have the concept of zero. The various symbols used are :

I   - Represents 1
V -  Represents 5
X -  Represents 10
L - Represents 50
C - Represents 100
D - Represents 500
M - Represents 1000

Using these Roman Numerals , number are created.
For Example :
2 is represented using I two times i.e. II
3 is represented using I three times i.e. III
4 is represented using I once and V once i.e IV
and so on

Some rules for writing numbers in Roman Form
1. Symbols (I , X, C, M) are repeated one after the other but more than three times.


2. Symbols V, L, D are never repeated.

3. Symbols with lesser values if written to the right then they are added to the larger symbol.example VI represent 6 and is got by adding 5 to 1.

4. Symbols with the lesser if written to the left then they are subtract to the larger symbol. Example IV represent 4 and obtained by subtracting 1 from 5.

Exercise:

(a) CIX                (i) 76
(b) XLV              (ii) 48
(c) LXXVI          (iii)109
(d) XLVIII          (iv)1204
(e) MCCIV         (v) 45

 Answers

(a)--(iii)
(b)--(v)
(c)--(i)
(d)--(ii)
(e)--(iv)

 Roman Numbers are also called as Ordinal numbers as they can used to represent order numbers such as first  (I), Second (II), third (III) ...