Man unterscheidet zwischen Grundzahlen:
I
- 1X
- 10C
- 100M
- 1000V
- 5L
- 50D
- 500Es gibt drei Regeln zur Bildung von römischen Zahlen:
I = 1 | XIII = 13 | XXIX = 29 | CC = 200 |
II = 2 | XIV = 14 | XXX = 30 | CD = 400 |
III = 3 | XV = 15 | XL = 40 | D = 500 |
IV = 4 | XVI = 16 | L = 50 | DC = 600 |
V = 5 | XVII = 17 | LIX = 59 | M = 1000 |
VI = 6 | XVIII = 18 | LX = 60 | 1558 = MDLVIII |
VII = 7 | XIX = 19 | LXX = 70 | 1625 = MDCXXV |
VIII = 8 | XX = 20 | LXXX = 80 | 1804 = MDCCCIV |
IX = 9 | XXIII = 23 | XC = 90 | 1900 = MCM |
X = 10 | XXIV = 24 | C = 100 | 1962 = MCMLXII |
XI = 11 | XXVII = 27 | CI = 101 | 1999 = MCMXCIX |
XII = 12 | XXVIII = 28 | CL = 150 | 2000 = MM |
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