What are some 26 different facts about the ancient Roman numeral system briefly explained from A to Z?

Answer 1

An abacus counting frame was once used to work out Roman numerals

Brackets were used to increase the values of numerals

C is the equivalent of 100 but (C) is 100,000

D is the equivalent of 500 but (D) is half a million

Etruscans first conceived this numeral system

Four was never used for IV for fear of offending the Roman god Jupiter

Gregorian calendar was introduced in MDLXXXII by Pope Gregory XIII

Hundred million is the equivalent of (((M)))

I equals 1 and once was (I) for a 1,000

Julius Caesar used Roman numerals to change the Roman year from 10 to 12 months

Kings, Queens and VIPs use Roman numerals to nominate their titles

L stands for 50 and is 50,000 as (L)

M is a 1,000 and once was (I) later changed to M

Novemdecim is the Latin word for XVIII meaning nineteen

October was once the VIII month in the Roman calendar

Prime numbers can also be found in Roman numerals

Quarter as a Roman numerical fraction is :. meaning 3/12

Roman numerals can be found on one USA dollar bills as MDCCLXXVI

S is the Roman numerical fraction for 1/2

Today Roman numerals are worked out quite differently than in Roman times

Undeviginti is the Latin word for IXX meaning one from twenty

V is 5 and (V) is 5,000

Working out Roman numerals as they should be is a puzzle and challenging

X equals 10 and (X) equals 10,000

Years and major sporting events use Roman numerals

Zero as a symbol for place value purposes was never needed because the place values of Roman numerals are self evident

QED by David Gambell