Roman Numerals

Roman Numerals is a special kind of numerical notation that was earlier used by the Romans. The Roman numeral system is both additive and subtractive, in which letters are used to represent specific base numbers. For example, the Roman numeral XLVII is equivalent to 47 in numeric form.

Table of Contents:

  • Definition
  • Roman Numbers Chart
  • Roman Numbers 1 to 100
  • Roman Numbers 100 to 1000
  • Roman Letters
  • Rules to Write Roman Numerals
  • Conversion – Roman Numerals to Numbers
  • Solved Examples
  • Practice Questions
  • FAQs

What are Roman Numerals?

Roman numerals are an ancient numbering system used by the Romans. They are based on certain symbols from the Latin alphabet. The system is both additive and subtractive, meaning a number can be formed by combining letters in a certain order. For instance, “V” represents 5, “X” represents 10, and so on. The rules of Roman numerals can be learned to represent both large and small numbers.

Roman Numerals Chart

Below is the Roman Numeral chart for reference. This chart contains the main Roman Numerals and their equivalent values:

IVXLCDM
1510501005001000

Roman Numbers 1 to 100

Below is the chart of Roman Numerals from 1 to 100:

NumberRoman Numeral
1I
2II
3III
4IV
5V
6VI
7VII
8VIII
9IX
10X
20XX
30XXX
40XL
50L
60LX
70LXX
80LXXX
90XC
100C

Roman Numbers 100 to 1000

Roman Numerals from 100 to 1000 are:

NumberRoman Numeral
100C
200CC
300CCC
400CD
500D
600DC
700DCC
800DCCC
900CM
1000M

Roman Letters

The Roman numeral system uses the following letters to represent specific values:

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

Rules to Write Roman Numerals

The rules to write Roman Numerals are:

  • Only seven symbols are used (I, V, X, L, C, D, M).
  • A smaller numeral before a larger numeral means subtraction (e.g., IV = 4).
  • A smaller numeral after a larger numeral means addition (e.g., VI = 6).
  • Repetition of numerals means multiplication (e.g., III = 3).

Conversion – Roman Numerals to Numbers

To convert Roman Numerals into numbers, follow these steps:

  • Identify the Roman letters.
  • Add the values of the symbols unless a smaller symbol comes before a larger one.
  • If a smaller symbol comes before a larger one, subtract its value from the larger one.

Solved Examples

Example 1:

Convert XII to number. Answer: 12

Example 2:

Convert MCMXC to number. Answer: 1990

Practice Questions

1. Convert XLVIII to number.

2. Convert MMX to number.

FAQs

What is the highest Roman numeral?

The highest Roman numeral is M, which represents 1000.

Can Roman numerals represent zero?

No, the Roman numeral system does not have a symbol for zero.

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