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Roman Numerals

Roman Numerals. This is the entrance to the Colosseum in Rome. If you look carefully you can see the numbers around the entrance. The Romans used a number system based on the following symbols. I V X L C D M Any idea what they’re worth?. 1 5 10 50 100 500 1000.

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Roman Numerals

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  1. Roman Numerals This is the entrance to the Colosseum in Rome. If you look carefully you can see the numbers around the entrance. The Romans used a number system based on the following symbols. I V X L C D M Any idea what they’re worth? 1 5 10 50 100 500 1000

  2. How to read Roman Numerals A letter repeats its value that many times (XXX = 10+10+10 = 30, CC = 100 + 100 = 200, etc.). A letter can only be repeated three times. If one or more letters are placed after another letter of greater value, add that amount.VI = 6 (5 + 1 = 6)LXX = 70 (50 + 10 + 10 = 70)MCC = 1200 (1000 + 100 + 100 = 1200) If a letter is placed before another letter of greater value, subtract that amount.IV = 4 (5 – 1 = 4)XC = 90 (100 – 10 = 90)CM = 900 (1000 – 100 = 900)

  3. Roman numerals are still used today. Can you read them in these modern examples? Pope Benedict XVI

  4. Roman numerals are still used today. Can you read them in these modern examples? 8 2004 Pope Benedict XVI 16 12 2008

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