Roman Numeral Worksheet
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Answer
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Roman Numeral Cheat Sheet
Roman numerals are a numeral system originating from ancient Rome. They use combinations of letters from the Latin alphabet (I, V, X, L, C, D, M) to represent numbers. Here's a breakdown of how to interpret these numerals:
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Basic Symbols:
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I stands for 1.
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V stands for 5.
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X stands for 10.
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L stands for 50.
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C stands for 100.
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D stands for 500.
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M stands for 1000.
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Combining Symbols:
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I before V (5) or X (10) means subtract 1 (e.g., IV = 4, IX = 9).
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X before L (50) or C (100) means subtract 10 (e.g., XL = 40, XC = 90).
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C before D (500) or M (1000) means subtract 100 (e.g., CD = 400, CM = 900).
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Adding Symbols:
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When a smaller numeral is placed after a larger or equal numeral, you add its value (e.g., VI = 6, XIII = 13).
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When a smaller numeral is placed before a larger numeral, you subtract its value (e.g., IX = 9, XL = 40).
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Examples:
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II: 1 + 1 = 2
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VII: 5 + 1 + 1 = 7
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XXV: 10 + 10 + 5 = 25
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LXXXVIII: 50 + 10 + 10 + 10 + 5 + 3 = 88
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XCIX: 90 - 1 + 1 = 99
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CXXX: 100 + 10 + 10 + 10 = 130
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CDXLIV: 500 - 100 + 50 - 10 + 4 = 444
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DCCCXC: 500 + 100 + 100 + 100 + 90 = 890
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MCMXCIV: 1000 + (1000 - 100) + (100 - 10) + 4 = 1994