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Because we are still taught the Roman numeral system under rules introduced during the Middle Ages which converts 99 into Roman numerals as XCIX (90+9 = 99) but these rules were made in a haphazard manner centuries after the fall of the Roman Empire.
In all probability the Romans themselves would have calculated 99 as LXXXXVIIII and by placing I to both sides of these numerals simplified them to IC (-1+100 = 99)
In fact the Latin word for 99 is "undecentum" which literally means one from a hundred.
What else can I help you with?
What does XCIX equal in roman numurals?
In todays modern notation of Roman numerals they represent 99
What is XCIX in roman numerals?
99
What is xcix represent in Roman Numerals?
99
What are the Roman numerals for 49 and 99?
The number 49 in Roman numerals is XLIX and the number 99 in Roman numerals is XCIX
What is X-XCIX?
The Roman numerals X-XCIX represent 10-99
What does XCIX equal in roman numurals?
In todays modern notation of Roman numerals they represent 99
What is XCIX in roman numerals?
99
What is xcix represent in Roman Numerals?
99
What are the Roman numerals for 49 and 99?
The number 49 in Roman numerals is XLIX and the number 99 in Roman numerals is XCIX
What is X-XCIX?
The Roman numerals X-XCIX represent 10-99
What is 99 in roman numerals?
XCIX is the modern standard for 99.
The sum of the roman numerals xcix and mlvi is?
99+1056 = 1155 or MCLV in Roman numerals Today we write out 99 in Roman numerals as XCIX but the Romans themselves would have probably wrote it out simply as IC (-1+100 = 99)
What is 99 minus 19 in Roman numerals?
XCIX - XIX = LXXX
What is the Roman Numeral of 99?
The Roman numeral for 99 is XCIX
What is 99 of Hindu Arabic into roman numerals?
Nowadays we would convert 99 into Roman numerals as XCIX But the ancient Romans probably chose the simpler version of IC
What Roman numeral is XCIX?
C=100 X=10 I=1 So it is 10 before 100 (=90) plus 1 before 10 (=9) . Thus the answer in ARABIC numerals is "99", while of cause XCIX in ROMAN numerals is "XCIX"
What number is this roman numeral xcix?
In today' notation of Roman numerals it stands for 99 but during the Roman era the equivalent of 99 in Roman numerals would have probably been written out simply as IC (100-1 = 99)
