Addition in Roman Numerals?

Addition & Roman Numerals

Addition in Roman Numerals?

In the Roman number system a symbol has a certain value and as a result is not able to show place value. This means that mathematical operations like addition are difficult. It also means that it is virtually impossible to do subtraction, multiplication or division algorithms.

So how did they do all the mathematics needed in the constructing of all their great buildings, the collection of taxes and the calculations involved in creating their calendar?

The answer is the abacus shown on the desk at the beginning of this webquest. All calculations were done on the abacus and then roman numerals were used to record the totals.

NB The Romans also had no way of representing parts of numbers i.e. fractions & decimals.

The shortcomings of the system mean that a lot of the progress we take for granted would never have been discovered had we continued to use roman numerals.

Make a list of things that could not have been achieved if we had have stayed with this inefficient and cumbersome roman numerals system.

Roman Numerals & Zero
The Roman Numerals Homepage
Roman Numerals Lesson