They used numerals because that was the system which they gradually developed over a long period of time. If someone had introduced them to the current system of numbers they would probably have used that instead, they just didn't know about it.
Chat with our AI personalities
The Romans did but these letters or numerals represented numbers.
Roman numerals are numbers that used to be used instead of the numbers today. They are letters that stand for numbers. Examples: III : 3 V : 5 XI : 11 LX : 60
because the Ancient Romans did not have symbols for numbers.
Roman numerals were the symbols developed by the Ancient Romans for counting and other numbering activities. The Romans used them because they developed them and that was what they knew. What do you use numbers for? They used them for the exact same things, instead of the kind of numbers we use, which are known as Arabic numerals.
They are system of letters used for calculations instead of numbers which were used by the Romans. M=1000, D=500, C=100, L=50, X=10, V=5, I=1