Note 3: (*) Romans were not using right from the beginning numbers larger than 3,999, so they initially had no representation for numbers like: Note 2 (*) Instead we prefer to write these larger numerals between brackets "()" since: 1) when compared to the overline - it is more accessible to computer users 2) when compared to the vertical line - it avoids any confusion between the vertical line "|" and the Roman numeral "I" (one). Note 1: (*) These numbers were written either with an overline (a bar above the number) or between two vertical lines (two vertical bars). The set of Roman numerals used for writing calendar dates The calendar date Feb-20, 2020 converted, written using Roman numerals: II - XX - MMXXĪll the calendar dates converted, written using the Roman numerals, online operations The calendar date May-16, 2200 converted, written using Roman numerals: V - XVI - MMCC The calendar date Oct-14, 4890 converted, written using Roman numerals: X - XIV - M(V)DCCCXC The calendar date Sep-10, 1584 converted, written using Roman numerals: IX - X - MDLXXXIV The calendar date Feb-01, 2014 converted, written using Roman numerals: II - I - MMXIV The calendar date Sep-18, 825 converted, written using Roman numerals: IX - XVIII - DCCCXXV The calendar date Jul-09, 1940 converted, written using Roman numerals: VII - IX - MCMXL The calendar date May-06, 2004 converted, written using Roman numerals: V - VI - MMIV The calendar date Mar-26, 717 converted, written using Roman numerals: III - XXVI - DCCXVII The calendar date Sep-24, 787 converted, written using Roman numerals: IX - XXIV - DCCLXXXVII The calendar date Jun-18, 20 converted, written using Roman numerals: VI - XVIII - XX The letter I can be subtracted from V and X only and the letter X can only be subtracted from L, M and C.The calendar date Dec-10, 2020 converted, written using Roman numerals: XII - X - MMXX.For example, LX is 60 because L = 50, X = 10, and since X is after L, we must add: LX = 50 + 10 = 60 When you write a letter with a smaller value after a letter with a bigger value, you must add the smaller value to the bigger value.For example, IV is 4 because I = 1, V = 5, and since the letter I came before V, we must subtract: IV = 5 - 1 = 4. When you write a letter with a smaller value before a letter with a bigger value, you must subtract the smaller value from the bigger value.Letters L, V, D, cannot be repeated at all - they must be unique for that number. For example: XX = 20 because X = 10, so 10 + 10 = 20 = XX
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