📚 Roman Numeral System Basics
Roman Numerals
| Roman Numeral | Arabic Numeral | Name |
|---|---|---|
| I | 1 | one |
| V | 5 | five |
| X | 10 | ten |
| L | 50 | fifty |
| C | 100 | hundred |
| D | 500 | five hundred |
| M | 1000 | thousand |
Writing Rules
1. Addition
If a smaller numeral is to the right of a larger one, it is added:
VI = 5 + 1 = 6
XV = 10 + 5 = 15
LXX = 50 + 10 + 10 = 70
2. Subtraction
If a smaller numeral is to the left of a larger one, it is subtracted:
IV = 5 - 1 = 4
IX = 10 - 1 = 9
XL = 50 - 10 = 40
3. Limitations
- Only I, X, C can be subtracted
- I can only be subtracted from V and X
- X can only be subtracted from L and C
- C can only be subtracted from D and M
Number Examples
I = 1
II = 2
III = 3
IV = 4
V = 5
VI = 6
VII = 7
VIII = 8
IX = 9
X = 10
XX = 20
L = 50
C = 100
D = 500
M = 1000
🔄 Number Converter
Arabic → Roman
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Roman → Arabic
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Quick Converter
✏️ Exercises
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🎮 Roman Numerals Game
Time: 60
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Game Results
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Time:
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