In today's notation it is: 499 = CMXCIX
But the Romans themselves would have probably worked out the equivalent of 499 on an abacus counting device as CCCCLXXXXVIIII and by placing I to both sides of these numerals simplified them to ID (-1+500=499)
The rules governing the Roman numeral system were changed in the Middle Ages presumably to make it easier for them to be converted into Hindu-Arabic numerals that were gradually being introduced into Western Europe.
One hundred and ninety two in Hindu Arabic numerals would be 192 and in Roman numerals it would be CXCII
90 is written as XC
One hundred thousand can be represented by the Roman numeral (C)
Five hundred in Roman numerals is the letter D.
One hundred and three in roman numerals is: CIII
One hundred and ninety two in Hindu Arabic numerals would be 192 and in Roman numerals it would be CXCII
90 is written as XC
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One hundred thousand can be represented by the Roman numeral (C)
90 in Roman numerals is XC.
Five hundred in Roman numerals is the letter D.
One hundred and three in roman numerals is: CIII
In roman numerals, numbers greater than 3999 use parentheses around, or a horizontal line above, the numbers that are to be multiplied by 1000. Writing 3999 can be written as MMMCMXCIX, but the number 4010 would be written as (IV)X. Therefore, the number 100,800 is written in roman numerals as (C)DCCC.
CMXC It could be written as XM, but that is not considered correct today.
It is: 120 = CXX in Roman numerals
One hundred is C, ninety is 100 minus 10. This would be written as CXCIV.
5 in Roman numerals is written as: V