What is the roman number of MCMLXXX stand for?

Answer 1

A table of Roman Numerals

M = 1000

D = 500

C = 100

L = 50

X = 10

V = 5

I = 1

When writing Roman numerals the largest value always goes to the left. Then they a added together.

If a smaller value is to the left of a larger value then it means subtract.

So the Numeral

MCMLXXX

Hence MM = 1000 + 1000 = 2000

However, the 'C' , a lower value is to the left of a larger value 'M' , and this means subtract 'C' from 'M' . Hence CM = 1000 - 100 = 900

So MCM = 1000 + ( 1000 - 100_ = 1000 + 900 = 1900

So MCMLXXX = 1900 + 50 + 10 + 10 + 10 = 1980.

or

MCMLXXX = 1000 +(1000 - 100) + 50 + 10 + 10 + 10 = 1000 + 900 + 50 + 10 + 10 + 10 = 1980 .

Answer 2

1980