400 (500-100)
CD = -100+500 = 400
CD in roman numerals is equivalent to 400.
The Roman numeral for 400 is CD, which can be used to represent CDL as 450.
The Roman numerals CIC represent 199.
The roman numerals "CD" represent the number 400. It is formed by combining the symbols for 100 (C) and 500 (D) with a subtraction rule, resulting in a value of 500 - 100 = 400.
Roman numerals represent numbers, they do not represent words.
In today's notation of Roman numerals they represent 299 in Hindu-Arabic numerals
400(CD) = 500(D) - 100(C) In Romn numerals if ther lesser value is shown to the left of the greater, then it means subtract.
I is the number 1 in Roman numerals.
There is no T in Roman numerals
1499 (m= 1000 cd= 400 xc=90 ix=9)
In today's terms of notating Roman numerals they represent 649