The Roman numeral system is a number system that originated in ancient Rome and uses specific letters to represent values. Unlike the modern decimal system, Roman numerals do not use place value or zero. Instead, numbers are written using a combination of seven basic symbols:
| Roman Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1000 |
Rules for Writing Roman Numerals
- Repetition Rule: A numeral can be repeated up to three times to add value. Example:
- III = 3, XX = 20, CCC = 300
- Addition Rule: When a smaller numeral is after a larger numeral, the values are added. Example:
- VI = 5 + 1 = 6
- LXV = 50 + 10 + 5 = 65
- Subtraction Rule: When a smaller numeral is before a larger numeral, the values are subtracted. Example:
- IV = 5 – 1 = 4
- IX = 10 – 1 = 9
- XL = 50 – 10 = 40
- No Repetition of Certain Symbols: The symbols V, L, and D cannot be repeated.
- Common Large Numbers:
- 5000 is written as V̅
- 10,000 is written as X̅
- 50,000 is written as L̅
Worksheet on Roman Numerals
Class 6
Section 1: Class Work (Solved Questions)
A. Convert the Given Numbers into Roman Numerals
- 49 → XLIX
- 97 → XCVII
- 154 → CLIV
- 388 → CCCLXXXVIII
- 792 → DCCXCII
B. Convert the Given Roman Numerals into Hindu-Arabic Numerals
- MCDXLIV → 1444
- DCCCXCIX → 899
- CMXLVII → 947
- MMXXIV → 2024
- CDLXXXV → 485
Section 2: Homework (Solve on Your Own)
A. Convert the Given Numbers into Roman Numerals
- 236
- 748
- 1059
- 1994
- 2750
B. Convert the Given Roman Numerals into Hindu-Arabic Numerals
- XCIV
- MCMXCIX
- CDLXII
- DCCCXLVI
- MMCDXII