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Last updated on February 24th, 2025
Roman numerals are a way of expressing numbers using symbols. I, V, X, L, C, D, and M are the symbols we use. Roman numerals are used in royal titles, book names, sequences, and so on. Here we will be discussing Roman numerals, rules, and examples.
The royal titles, such as Henry I, Henry II, and so on, use Roman numerals. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman numerals.
Earlier, people used fingers, sticks, bones, etc., to count. When life became complex, a standard form was required to count. Ancient Romans used the Roman numeral system to count. I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are the symbols we use to count.
In Roman numerals, we use CDLXV to represent 465, where C is 100, D is 500, L is 50, and XV is 15. 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 the smaller number is placed after the larger number. For example, XV → X + V → 10 + 5 = 15.
To write a large number, certain Roman numerals can be repeated up to three times. For example, XXX → 30.
If a small number precedes a large number in Roman numerals, we subtract the smaller number from the large number. For example, IX → X - I → 10 - 1 = 9.
The symbols cannot be repeated more than three times, and symbols like V, L, and D cannot be repeated. For example, we won't write VV for 10; instead, we use X.
Let’s now learn how to write 465 in Roman numerals. Follow these methods to write the number in Roman numerals:
In the expansion method, based on the place value, the number is broken down. In this section, we will learn how to write 465 in Roman numerals using the expansion method. To write 465 in Roman numerals, follow these steps:
Step 1: Break the number based on the place value: ones, tens, hundreds, etc. For 465, we write it as 400 + 60 + 5.
Step 2: Convert each number into Roman numerals: 400 in Roman numerals - CD 60 in Roman numerals - LX 5 in Roman numerals - V
Step 3: Combine these Roman numerals together. Therefore, 465 in Roman numerals is CD (400) + LX (60) + V (5) = CDLXV.
When writing a large number into Roman numerals, we group the number. To write 465 in Roman numerals, we group 465 as 400 + 60 + 5.
So, 465 is written as CDLXV in Roman numerals.
If you multiply CLV by III, what is the product in Roman numerals?
A historian has found a collection of CD books and wants to distribute them evenly to V scholars. How many books will each scholar receive?
Calculate the sum of CCXX and CCXLV in Roman numerals.
What is the difference between D and XXXV in Roman numerals?
Express the sum of 300 + 165 in Roman numerals 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.