How To Write 40 in Roman Numerals?

The number 40 in Roman numerals is written as XL. Roman numerals are based on a combination of letters from the Latin alphabet, where specific letters represent certain values. For example, X equals 10, and L equals 50. To write 40, the Roman numeral system uses the subtractive principle. When a smaller numeral (X) is placed before a larger numeral (L), it means the smaller value is subtracted from the larger one. Thus, XL equals 50 – 10, which is 40. This subtractive approach avoids writing four identical symbols in a row (e.g., XXXX), making it both efficient and elegant.