Subtractive Notation
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Subtractive Notation

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Subtractive notation is an early form of positional notation used with Roman numerals as a shorthand to replace four or five characters in a numeral representing a number with usually just two characters. Using subtractive notation the numeral VIIII becomes simply IX. LXXXXVIII would become IIC, which is invalid in Roman numerals though. Without subtractive notation, XIV represents the same number as XVI (16 in Arabic numerals). With the introduction of subtractive no...