The way we write numbers, using Hindu-Arabic numerals, is hardly the only way to do so. Many civilizations used other means to denote numbers. For example, the Romans represented numbers using the numerals I, V, X, L, C, D, and M. These numerals represent the following numbers:

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

In rules for formation of Roman-numerals system there is no symbol or digit for zero. This system has no place value system. The digit or digits of lower value is/are placed after or before the digit of higher value. The value of digits of lower value is added to or subtracted from the value of digit of higher value. If we have to write the numbers beyond 10 we should write the number 10 or groups of number 10 and then number 1 or 5 as the case may be. Then these numbers are used to change to the corresponding Roman numerals.

So the number 113 is written in Roman numerals like this: CXIII

More Info: www.math.nmsu.edu