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What are four different ways of adding 8.5 to 18.5 and four different ways of subtracting 8.5 from 18.5 but working out all eight calculations and answers entirely in Roman numerals?
Wiki User
∙ 8y ago
It is my understanding that there are no decimals or fractions in Roman Numerals.
Another Answer:-
The Roman numeral system once used fractions to a limited extent and the fractional numeral for 1/2 or 0.5 was S thus facilitating the correct calculations of the above numbers into Roman numerals as follows:-
VIIIS+XVIIIS = XXVII => 8.5+18.5 = 27
SIX+SIXX = XXVII => (10-1.5)+(20-1.5) = 27
VIIIS+SIXX = XXVII => 8.5+(20-1.5) = 27
SIX+XVIIIS = XXVII => (8-1.5)+18.5 = 27
XVIIIS-VIIIS = X => 18.5-8.5 = 10
SIXX-SIX = X => (20-1.5)-(10-1.5) = 10
SIXX-VIIIS = X => (20-1.5)-8.5 = 10
XVIIIS-SIX = X => 18.5-(10-1.5) = 10
Note that in mathematics -(10-1.5) becomes 1.5-10 and in the book '50 mathematical ideas you really need to know' by Tony Crilly he points out the fact that the ancient Romans would sometimes use SIX instead of VIIIS which both are the equivalent of 8.5.
QED
Wiki User
∙ 8y ago
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How would you actually add together 1666 and 1999 in two different ways entirely in Roman numerals throughout both calculations with explanations?
See answer to question: ' How do you add together 1666 and 1999 in two different ways using Roman numerals'
How would you work out 1776 plus 549 in two different ways and 1776 minus 549 in two different ways but working out all four calculations entirely in Roman numerals with explanations?
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).
How are Roman Numerals related to Roman science?
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What is mccxxix in Hindu Arabic numerals?
According to my calculations,mccxxix in Hindu Arabic numerals is 1229
How did they use roman numerals in calculations?
The Romans did their calculations on an abacus counting device which was the equivalent to a primitive calculator.
How would you work out 1776 plus 99 in two different ways and 1776 minus 99 in two different ways but working out all four calculations entirely in Roman numerals?
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How would you add together 31 plus 19 in two different ways and 31 minus 19 in two different ways showing all four calculations entirely in Roman numerals?
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