505 in Roman numerals

505 in Roman numerals is DV.

Pick any whole number from 1 to 3,999.

505 = \text{DV}

How to work it out

1
Take the biggest Roman value that fits, write its letter, subtract it, and repeat.
2
Here: 500 (D) + 5 (V) = 505.
3
Joined together: DV. (Four of the same letter in a row is never used: 4 is IV, 9 is IX, 40 is XL, 90 is XC, 400 is CD, 900 is CM.)

Value	Letters
500	D
5	V

What is 505 in Roman numerals?

DV.

How do you read DV?

DV = 500 + 5 = 505.