Roma an Nu umera als

Romaan Nu
umera
als
The Rooman Symbolss
The Romanns used a sppecial metho
od of showiing numberrs, based on the followiing symbolss:
1
I
5
V
100
X
50
L
100
C
500 1000
D
M
Numbers ggreater thann 1,000 are formed
f
by pplacing a daash over thee symbol, m
meaning "tim
mes 1,000",,
but these aare not comm
monly used:
5000
V
10,0
000 50,0000 100,000
0 500,000 1,000,0000
X
L
C
D
M
Basic C
Combin
nations
1
I
1
10
X
1000
C
2
3
4
II
III
IV
20
30
40
XX XXX
X
XL
200 300 400
CC CCC
C
CD
5
V
50
L
500
D
6
7
8
9
VII VII
VIII
IX
60
0
70
80
990
LX
X LXX LXXX X
XC
600 700
800
9000
DC
C DCC DCCC C
CM
Formiing Num
mbers - The Ru
ules
When a sym
mbol appeaars after a larger symbbol it is added
•
Exaample: VI = V + I = 5 + 1 = 6
When a sym
mbol appeaars before a larger sym
mbol it is su
ubtracted
•
Exaample: IX = X - I = 10 - 1 = 9
Don't use tthe same sym
mbol more than three ttimes in a ro
ow.
How to Convert to Roman Numerals
Break the number into Thousands, Hundreds, Tens and Units and write down each in turn.
Example: Convert 1984 to Roman Numerals.
Break 1984 into 1000, 900, 80 and 4, then do each conversion
•
•
•
•
1000 = M
900 = CM
80 = LXXX
4 = IV
So 1984 = MCMLXXXIV