Who made Roman numerals? Why did they make Roman numerals? What does Roman numerals mean? Answer the questions in separate sentences.

Here ya go!

The Roman numeral system for representing numbers was developed around 500 BC. As the Romans conquered much of the world that was known to them, their numeral system spread throughout Europe, where Roman numerals remained the primary manner for representing numbers for centuries.

-It was probably in the 4th century BC, that the Romans came up with their number system of symbols derived from the Etruscan numbers. Roman numerals are believed to have originated from the tally sticks, which were used by the Dalmatian and Italian shepherds as memory aid devices to record numbers.

-Roman numerals originated, as the name might suggest, in ancient Rome. ... The numerals developed out of a need for a common method of counting, essential to communications and trade. Counting on one's fingers got out of hand, so to speak, when you reached 10. So, a counting system was devised based on a person's hand.

-any of the letters representing numbers in the Roman numerical system: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000. In this system, a letter placed after another of greater value adds (thus XVI or xvi is 16), whereas a letter placed before another of greater value subtracts (thus XC or xc is 90).

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.