## Quick decimal to roman conversions

### October 1, 2007

Roman numerals start off nicely enough – I for 1, II for 2 and so forth – but they get progressively more complex. Don’t worry though, this article will have you converting 448 into CDXLVIII within minutes.

Break the decimal number into smaller pieces that match the **Decimal** column of the table below. For eg: 104 becomes 100 + 4.

Follow these simple rules:

- If you cannot find an exact match simply add two smaller values

e.g.: 3 becomes 1 + 1 + 1 - Use as few pieces as possible

e.g.: 6 is 5 + 1 instead of 1 + 1 + 1 + 1 + 1 + 1

Decimal |
Roman |

1 | I |

4 | IV |

5 | V |

9 | IX |

10 | X |

40 | XL |

50 | L |

90 | XC |

100 | C |

400 | CD |

500 | D |

900 | CM |

1000 | M |

Now write the Roman numeral for each piece from left to right, like 104 is CIV.

Some further examples:

448 is split up as 400 + 40 + 5 + 1 + 1 + 1

Which is then written as CDXLVIII

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