The Romans never used their numerals for arithmetic, thus avoiding the need to keep a column empty with a zero symbol. Addition and subtraction were done instead on an abacus or counting frame.

Zero. "Place-keeping" zeros are alien to the system of Roman numerals - however the actual number zero (what remains after 1 is subtracted from 1) was also missing from the classical Roman numeral system.

Because Roman Numerals System was developed for mostly knowing the price of goods, and to trade. So, there was no need for a symbol to represent zero. Instead of the number zero, the word “nulla” (the Latin word meaning "none") was used by the Romans.

"Zero and its operation are first defined by [Hindu astronomer and mathematician] Brahmagupta in 628," said Gobets. He developed a symbol for zero: a dot underneath numbers.

The first recorded zero appeared in Mesopotamia around 3 B.C. The Mayans invented it independently circa 4 A.D. It was later devised in India in the mid-fifth century, spread to Cambodia near the end of the seventh century, and into China and the Islamic countries at the end of the eighth.

K comes from the Greek word kilo which means a thousand. The Greeks would likewise show million as M, short for Mega. So if we stay consistent with the Greek abbreviations, then billion would be shown as a letter G (Giga). Think of your computer expressing bytes of memory as kilobyte, megabyte or gigabyte.

Therefore we can definitely say that K is not a roman number. It is a letter that belongs to our alphabet and it is the abbreviation of Kilo, which in turn means to multiply a certain unit by 1000. So, a Kilogram means 1000 grams; a Kilometre means 1000 metres, and so on.

Zero. The number zero does not have its own Roman numeral. About 725, Bede or one of his colleagues used the letter N, the abbreviation (short form) of nihil (the Latin word for "nothing").

So X̅ would equal 10,000 and ̅V would equal 5,000. So to write 1 million in roman numerals you'd have to simply write the symbol for 1,000 with a bar over it, namely ̅M.

Numbers in the teens, twenties and thirties follow the same form as the first set, only with X's indicating the number of tens. So XXXI is 31, and XXIV is 24. L. L means 50. Based on what you've learned, I bet you can figure out what 40 is.

Overview. The numeral system developed by the Romans was used by most Europeans for nearly 1800 years, far longer than the current Hindu-Arabic system has been in existence.

Controversially, the only Super Bowl game to not use Roman numerals was Super Bowl 50. The Roman numeral for 50 is L, and, because NFL ad designers felt that the Super Bowl L title was too unattractive and unmarketable, they opted to use the number 50 instead.

Etymology. The Hindu-Arabic or Indo-Arabic numerals were invented by mathematicians in India. Persian and Arabic mathematicians called them "Hindu numerals". Later they came to be called "Arabic numerals" in Europe because they were introduced to the West by Arab merchants.

It only coincidentally also stands for centum, the Latin word for a hundred. L = 50 — This value was originally represented by a superimposed V and I, or by the letter psi — Ψ — which flattened out to look like an inverted T, and then eventually came to resemble an L.