I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000
I = 1 II = 2 III = 3 IV = 4 V = 5 VI = 6 VII = 7 VIII = 8 IX = 9
X = 10 XX = 20 XXX = 30 XL = 40 L = 50 LX = 60 LXX = 70 LXXX = 80 XC = 90
C = 100 CC = 200 CCC = 300 CD = 400 D = 500 DC = 600 DCC = 700 DCCC = 800 CM = 900
II = 2 XXX = 30
XI = 11 MCL = 1150
IV = 4 CM = 900
IV should be used rather than IIII 2987 is written as MMCMLXXXVII because: The first M gives you 1000 The next M gives you 1000 The next CM gives you 900 The next LXXX gives you 80 The next VII gives you 7 Therefore if you add the amounts together, you will get 2987.
Five million would be represented by MMMMM with a bar above each M. This procedure is necessary because in Roman numerals, there is no larger symbol than M (1,000). This method isn’t commonly used, but it’s good to know how it works.