The Roman numeral system works by having separate symbols to represent different numbers but unlike our system there was no symbol for zero. Essentially we have 9 numbers and then add a zero on the end to denote 10s, two zeros to denote 100s and so on. the Romans simply had additional symbols to denotes 10s, 100s etc. Examples of Roman numerals and how they are worked out follows...
1 = I
2 = II (1 + 1)
3 = III (1+ 1 + 1)
4 = IV (1 before 5)
5 = V
then the system repeats...
6 = VI (5 + 1)
7 = VII (5 + 1 + 1)
8 = VIII (5 + 1 + 1 + 1)
9 = IX (1 before 10)
10 = X
Additional numerals exist for 50 (L), 100 (C), 500 (D) and 1000 (M) and they work on the same system so, for example...
XX = 20
XXX = 30
XL = 40
CCC = 300
CD = 400
CM = 900
CCCLX is the number 280 in roman numerals. This number is used to represent what roman used to write.
XXVIII is the number 28 in Roman numerals.
The Roman numerals was the numerical system used in Ancient Rome and used a combination of letters, for example the Roman numeral VII would represent the numbers 5 and 1 and 1, adding the total of the numerals VII would represent the number seven.
The greatest value two digit number in Roman numerals would be [MM] with a horizontal bar placed above it, which would represent the number 2 Billion. In generally used Roman numerals MM represents 2000.
Roman numerals are used as numbers. For example, the roman numeral for the number one is an I. The system can be used for any number.
CCCLX is the number 280 in roman numerals. This number is used to represent what roman used to write.
That would be Roman Numerals.
XXVIII is the number 28 in Roman numerals.
Roman numerals are used to represent the chords in a musical piece.
The Roman numerals was the numerical system used in Ancient Rome and used a combination of letters, for example the Roman numeral VII would represent the numbers 5 and 1 and 1, adding the total of the numerals VII would represent the number seven.
The greatest value two digit number in Roman numerals would be [MM] with a horizontal bar placed above it, which would represent the number 2 Billion. In generally used Roman numerals MM represents 2000.
Roman numerals are used as numbers. For example, the roman numeral for the number one is an I. The system can be used for any number.
The Roman numerals used to represent the chords in a minor scale are: i, ii, III, iv, v, VI, VII.
Roman numerals do not include decimals although the Romans did use fractions to a limited extent.
"Clix" is not a commonly used term in Roman numerals. The Roman numeral system is based on a combination of letters to represent numbers. For example, I = 1, V = 5, X = 10, and so on. If you are referring to a specific usage of "clix," it may be a rare or unconventional representation of a number in Roman numerals.
CCLVII is the number 257 in roman numerals. This is a notation used earlier for representing numbers.
Assuming you mean the Roman letter D used to represent a number: D = 500