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Last updated on February 24th, 2025
Roman numerals are a way of expressing numbers using symbols. The symbols used are I, V, X, L, C, D, and M. Roman numerals are used in royal titles, book names, sequences, and more. Here we will discuss Roman numerals, rules, and examples.
Royal titles such as Henry I, Henry II, and so on use Roman numerals. Have you noticed these names and wondered what the symbols (I and II) represent? Those are Roman numerals.
In ancient times, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was required for counting. Ancient Romans used the Roman numeral system for this purpose. The symbols used are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).
In Roman numerals, we use LXXXII to represent 82, where L is 50, XXX is 30, and II is 2. Let’s learn more about Roman numerals and how we write them.
There are certain basic rules to write a number in Roman numerals. In this section, let’s discuss some basic rules that need to be remembered when writing a number in Roman numerals.
The addition method is used when a smaller number is placed after a larger number. For example, LXXXII → L + XXX + II → 50 + 30 + 2 = 82.
To write certain numbers, Roman numerals can be repeated up to three times. For example, XXX → 30 (X repeated three times).
If a smaller number precedes a larger number in Roman numerals, it is subtracted. For example, IX → X - I → 10 - 1 = 9.
Symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we won't write LL for 100; instead, we use C.
Let’s now learn how to write 82 in Roman numerals. Follow these methods to write the number in Roman numerals.
In the expansion method, the number is broken down based on place value. In this section, we will learn how to write 82 in Roman numerals using the expansion method.
To write 82 in Roman numerals, follow these steps:
Step 1: Break the number based on place value: tens and ones.
For 82, we write it as 80 + 2.
Step 2: Convert the number into Roman numerals:
80 in Roman numerals — LXXX
2 in Roman numerals — II
Step 3: Combine the Roman numerals:
Therefore, 82 in Roman numerals is LXXX (80) + II (2) = LXXXII.
When writing a large number in Roman numerals, we group the number.
To write 82 in Roman numerals, we group it as 80 + 2:
80 in Roman numerals — LXXX
2 in Roman numerals — II
So, 82 is written as LXXXII in Roman numerals.
A historian is translating an ancient text that describes the construction of a bridge in LXXXII days with the help of VIII workers. If each worker was responsible for an equal number of days, how many days did each worker contribute?
A collector buys LXXXII coins each year for V years. Find the total number of coins collected.
Calculate the difference between CC and LXXXII.
A treasure map indicates there are CLXX gold coins buried in a field, but only LXXXII were retrieved. How many coins remain buried?
Write the Roman Numeral for 35 + 47 using the expansion method.
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.