Do roman numerals have to written in a specific order?

Answer 1

Yes, all positive numerals are written in descending order from left to right while all negative numerals are written in descending order from right to left. For example 86 in Roman numerals is LXXXVI (86) or VXCI (-15+101) Roman numeral values: M=1000, D=500, C=100, L=50, X=10, V=5 and I=1 In the above example LXXXVIis certainly the accepted method of writing 86 and complies with the rule mentioned in the first sentence of the above answer but quite clearly VXCI does not. Also according to the website Algebra.com the numeral V may be placed before X or L but not before any higher numeral.