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##### Page: Roman Numerals | Roman Numbers

**Roman numerals were developed by the Ancient Romans. **

**We can see them in the numbers on clock face, **

**Number of chapters,**

**Denoting ranks in the class, etc.**

**The rules for the system are **

**If a symbol is repeated its value is added as many times as it occurs.**

**II is equal 2****XX is equal to 20****XXX is equal 30**

**A ****symbol is not repeated more than three times. **

** But the symbols V, L and D are never repeated.**

** If a symbol of smaller value is written to the right of a symbol of greater value, its value gets added to the value of greater symbol.**

Ex

VI = 5+1=6

XII = 10 + 1+1

= 12.

LXV= 50+ 10+5 =65

** If a symbol of smaller value is written to he left of a symbol of greater value, its value subtracted from the value of greater symbol .**

IV =5 – 1=4

XC = 100-10- 90.

**The symbols V, L&D are never written to the left of a symbol of greater value,**

i.e. V, L and D never subtracted.

**The symbol I can be subtracted from v and X only.**-
**X can be subtracted L, M and C only.** **C can be subtracted from D and M only.**