440 in Roman numerals

440 in Roman numerals is CDXL.

Pick any whole number from 1 to 3,999.

440 = \text{CDXL}

How to work it out

1
Take the biggest Roman value that fits, write its letter, subtract it, and repeat.
2
Here: 400 (CD) + 40 (XL) = 440.
3
Joined together: CDXL. (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
400	CD
40	XL

What is 440 in Roman numerals?

CDXL.

How do you read CDXL?

CDXL = 400 + 40 = 440.