I WONDER - How Do Roman Numerals Work?

Roman numerals lack a symbol for zero, using subtraction to represent numbers less than the base value. They are challenging to read and write due to the absence of a place value system, requiring addition or subtraction of symbol values to determine the number.

What is a unique characteristic of Roman numerals regarding the number zero?

How do Romans represent numbers that are less than the base value?

Why can Roman numerals be challenging to read and write?

What does the position of a symbol in Roman numerals indicate?

What must one do to determine the value of a number represented in Roman numerals?