Notwithstanding todays modern conversion of 999 into Roman numerals which is now considered to be CMXCIX inasmuch that the ancient Romans would have probably added together the equivalent of 777 and 999 in either of the following formats:-
Abridged format:
DCCLXXVII+IM = MDCCLXXVI => 777+(1000-1) = 1776
Elongated format:
DCCLXXVII+DCCCCLXXXXVIIII = MDCCLXXVI => 777+999 = 1776
QED
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.
See answer to question: ' How do you add together 1666 and 1999 in two different ways using Roman numerals'
MIM + MMXIV = MMMXIII or MMCXCIX + MMXIII = MMMXIII There is only one way to write the solution (3013)
The five letter word MIMIC can be formed from Roman numerals but as the individual numerals are in the wrong order it isn't a real Roman numeral.
In today's modern usage of Roman numerals, CCCXCIV represents 394, but the ancient Romans would have converted and notated the equivalent of 394 into Roman numerals entirely quite differently.
Roman numerals are entirely inappropriate for doing such calculations. I believe the people in Roman times did such calculations on an abacus or something similar - which is basically similar to converting them to the Arabic numbers we use. If you really want to do it in Roman numerals - which is basically NOT a good idea - you would have to keep the thousands, hundreds, etc. separate, and handle carry (for addition) and borrowing (for subtraction).
See answer to question: ' How do you add together 1666 and 1999 in two different ways using Roman numerals'
MIM + MMXIV = MMMXIII or MMCXCIX + MMXIII = MMMXIII There is only one way to write the solution (3013)
The five letter word MIMIC can be formed from Roman numerals but as the individual numerals are in the wrong order it isn't a real Roman numeral.
Convert from Roman numerals to Arabic numerals, add, convert back to Roman numerals.
In today's modern usage of Roman numerals, CCCXCIV represents 394, but the ancient Romans would have converted and notated the equivalent of 394 into Roman numerals entirely quite differently.
3314
Roman numerals are entirely inappropriate for doing such calculations. I believe the people in Roman times did such calculations on an abacus or something similar - which is basically similar to converting them to the Arabic numbers we use. If you really want to do it in Roman numerals - which is basically NOT a good idea - you would have to keep the thousands, hundreds, etc. separate, and handle carry (for addition) and borrowing (for subtraction).
When in Rome do as the Roman do and the ancient Romans would have probably added together 1999 and 3001 in either of the following ways:- IMM+MMMI = (V) => (2000-1)+3001 = 1000*5 = 5000 MDCCCCLXXXXVIIII+MMMI = (V) => 1999+30001 = 5000 Note that in todays modern configuration of Roman numerals 1999 is now considered to be MCMXCIX
Bear in mind that Roman numerals actually are numbers, they are just not the kind of numbers that we presently use, which are called Arabic numerals. Arabic numerals were first used in Europe in the year 976 AD. Roman numerals still have not entirely fallen out of use, although for most purposes we use Arabic numerals.
Cmxcix + xiv + mcmlxxxvii = mmm. It should be all in capital letters, but the system changed them.
CIVIC
W existed in the "medieval roman numerals", they were different from the modern roman numerals we know and use today. W was 800, in modern roman numerals that would be DCCC.