In accordance with the rules governing the Roman numeral system made up during the Middle Ages and centuries after the Romans had quit England, 999 in Roman numerals is today reckoned to be CMXCIX and half of this would work out as CDXCIXS (499.5)
But in all reality the Romans themselves would have most probably wrote out 999 simply as IM and half of this work's out as SD (-0.5+500 = 499.5)
Note that the Roman numeral for a 1/2 looks like the letter S and its Latin name is 'semis' which means a half.
Half of 999 in Roman numerals is CDXCIX.
CMXCIX.999 = CMXCIX
999
bar(bar(CMXCIX)CMXCIX)CMXCIX
IM represents 999 in Roman numerals (-1+1000).
The number is 99 trillion 999 billion 999 million 999 thousand 999
CMXCIX.999 = CMXCIX
999
bar(bar(CMXCIX)CMXCIX)CMXCIX
IM represents 999 in Roman numerals (-1+1000).
The number is 99 trillion 999 billion 999 million 999 thousand 999
The Roman numeral IM means -1+1000 = 999
999 is IM Roman numerals = 1000-1
I think it is IXIXIX. I checked the Internet and that what I got but hey it might be wrong.Improved Answer:-In accordance with today's rules governing the Roman numerals 999 converted into Roman numerals works out as CMXCIX.But during the Roman era the Romans themselves would have calculated the equivalent of 999 on an abacus counting device as DCCCCLXXXXVIIII and probably simplified it to IM (-1+1000 = 999) in written form.
To add 777 and 999 in Roman numerals, you can first convert the numbers to their Roman numeral equivalents. 777 is DCCCLXXVII and 999 is CMXCIX. Method 1: Add the two Roman numerals: DCCCLXXVII + CMXCIX = MDCCC LXXVI Method 2: Convert both numbers to their Arabic numeral equivalents, add them together, and then convert the sum back to Roman numerals: 777 + 999 = 1776, which can be written as MDCCLXXVI in Roman numerals.
IM in Roman numerals represents 999 (-1+1000).
In todays notation of Roman numerals they represent: 999
888 when writing with roman numerals it is 12 characters long DCCCLXXXVIIIAnother answer:999 in Roman numerals in additional notation is DCCCCLXXXXVIIII which has 15 numerals.