The Math Meridian
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Roman numerals

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Learn it I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000. Add the values, but a smaller numeral placed before a larger one is subtracted.

Example: What number is MCMXLIV?

  1. M = 1,000.
  2. CM = 1,000 − 100 = 900.
  3. XL = 50 − 10 = 40. IV = 5 − 1 = 4.
  4. $1{,}000 + 900 + 40 + 4 = 1{,}944$.

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