Sunday, August 22, 2010

Roman Numerals


Roman numerals are written as combinations of the seven letters in the table below. The letters can be written as capital (XVI) or lower-case letters (xvi).
Roman Numerals
I = 1
C = 100
V = 5
D = 500
X = 10
M = 1000
L = 50
You can use a roman numerals chart or conversion table to lookup roman numerals or you can easily learn how to calculate them yourself with a few simple rules.

How to Translate Roman Numerals

If smaller numbers follow larger numbers, the numbers are added. If a smaller number precedes a larger number, the smaller number is subtracted from the larger. For example, if you want to say 1,100 in Roman Numerals, you would say M for 1000 and then put a C after it for 100; in other words 1,100=MC in Roman Numerals.
Some more examples:
  • VIII = 5+3 = 8
  • IX = 10-1 = 9
  • XL = 50-10 = 40
  • XC = 100-10 = 90
  • MCMLXXXIV = 1000+(1000-100)+50+30+(5-1) = 1984
Roman Numeral Table
1
I
14
XIV
27
XXVII
150
CL
2
II
15
XV
28
XXVIII
200
CC
3
III
16
XVI
29
XXIX
300
CCC
4
IV
17
XVII
30
XXX
400
CD
5
V
18
XVIII
31
XXXI
500
D
6
VI
19
XIX
40
XL
600
DC
7
VII
20
XX
50
L
700
DCC
8
VIII
21
XXI
60
LX
800
DCCC
9
IX
22
XXII
70
LXX
900
CM
10
X
23
XXIII
80
LXXX
1000
M
11
XI
24
XXIV
90
XC
1600
MDC
12
XII
25
XXV
100
C
1700
MDCC
13
XIII
26
XXVI
101
CI
1900
MCM

A Brief History of Roman Numerals

What is the history of Roman Numerals? Roman numerals, as the name suggests, originated in ancient Rome. No one is sure when roman numerals were first used, but they far predate the middle ages. Theories abound as to the origins of this counting system, but it is commonly believed to have started with the ancient Etruscans. The symbol for one in the roman numeral system probably represented a single tally mark of the kind people would notch into wood or dirt to keep track of items or events they were counting.


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