Roman Numerals

Roman numerals, writing roman numerals, etc… Please follow the list for detailed expressions, lists and examples;






A numeral system is a writting system for expressing numbers. 

We generally use 10 digits ( 012, 3, 4, 5, 6, 7, 8, 9 ) for writting a number in many parts of the world which are called arabic numbers or arabic numerals.

However sometimes we can use or see another numeral system for writting numbers which are used by the ancient Romans to write numbers ( like I=1, III=3, V=5, X=10, C=100) which are called roman numbers or roman numerals.



The Letters Used in Roman Numerals

( from lower to higher )

  • I  =  1
  • V  =  5
  • X  =  10
  • L  =  50
  • C  =  100
  • D  =  500
  • M  =  1000

NOTE 1: 

Roman numerals are essentially known as uppercase letters: I, V, X, L, C, D and M.

However, it is possible to use lowercase letters: i, v, x, l, c, d and m.

NOTE 2:

We can make or see a combination is made of smaller groups of these letters ( such as XX – xx, LXVI – lxvi, CCCVII – cccvii), each group in increasing order from right to left. The whole combination represents a number.

Examples:

  • XX = X (10) + X (10) = 20 
  • LXX= L (50) + XX (20) = 70
  • CXCII = C (100) + XC (90) + II (2) = 192
  • MDLXXXIV = M (1000) + D (500) + LXXX (80) + IV (4) = 1584

NOTE 3: 

The letters can be repeated three times to increase the value but the letter can not be repeated more than three times.

It means;

  • XXX ( CORRECT )
  • XXXX ( INCORRECT)
  • CCC ( CORRECT )
  • CCCC ( INCORRECT)

You can see some important or most used numbers or numerals below;

ROMAN NUMERAL ROMAN NUMERALARABIC NUMERAL
Upper-caseLower-case ————————
Ii1
IIii2
IIIiii3
IViv4
Vv5
VIvi6
VIIvii7
VIIIviii8
IXix9
Xx10
XIxi11
XIIxii12
XIIIxiii13
XIVxiv14
XVxv15
XVIxvi16
XVIIxvii17
XVIIIxviii18
XIVxiv19
XXxx20
XXXxxx30
XLxl40
Ll50
LXlx60
LXXlxx70
LXXXlxxx80
XCxc90
Cc100
CCcc200
CCCccc300
CDcd400
Dd500
DCdc600
DCCdcc700
DCCCdccc800
CMcm900
Mm1000

You can see also detailed roman numberals list below; 

From 1- 10

From 11 to 20

From 21 to 30

From 31 to 40

From 41 to 50

From 51 to 60

From 61 to 70

From 71 to 80

From 81 to 90

From 91 to 100

From 10 to 100

From 100 to 1000

From 1000 to 5000

From 10,000 to 1,000,000

From 5,000,000 to 1,000,000,0000

Examples with Writing Roman Numerals

 

 


One Response

  1. Johny Jackson January 18, 2018