LIBRARY HOME - Garage -  Workshop -  Office -  Library -  Bathroom -  Living -  Nursery -  Spare Utility -  Kitchen -  Games -  Music - Garden -  Kennel - SEARCH SITE

# ROMAN NUMERALS

Basic Principles

When a small number comes before a larger number, the smaller number is subtracted.  .

e.g. 4 = IV  (i.e. 5 - 1)

When a smaller number follows a larger one, the two are added together.

e.g. 6 = VI (i.e. 5 + 1)]

When a letter is repeated is repeats its value -

e.g.       XX = 10 + 10            XXX = 10 + 10 + 10

The letters V, L and D are never repeated as X, C and M serve that purpose.

e.g. 10 = X not VV     100 = C not LL      1000 = M not DD

A dash line over a numeral multiplies its value by 1000 -

__
e.g.  = 10,000

 I 1 II 2 III 3 IV 4 V 5 VI 6 VII 7 VIII 8 IX 9 X 10 XI 11 XII 12 XIII 13 XIV 14 XV 15 XVI 16 XVII 17 XVIII 18 XIX 19 XX 20 XXX 30 XL 40 L 50 LX 60 LXX 70 LXXX 80 XC 90 C 100 CC 200 CD 400 D 500 DC 600 DCC 700 DCCC 800 CM 900 M 1000 MM 2000 MMI 2001 V 5,000 X 10,000 L 50,000 C 100,000 D 500,000 M 1,000,000

A bar across the top of the letter increases the number 1,000 times.