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Last updated on March 29th, 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. Have you noticed the names and wondered what these symbols (I and II) represented? Those are Roman numerals. Earlier people used to count using fingers, sticks, bones, etc. When life became complex, a standard form was required for counting. Ancient Romans used the Roman numeral system for counting. I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are the symbols used in Roman numerals.
In Roman numerals, we use CCXIX to represent 219. Here, C is 100, X is 10, and IX is 9. 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.
Rule 1: Addition Method
The addition method is used when the smaller number is placed after the larger number. For example, XI → X + I → 10 + 1 = 11.
Rule 2: Repetition Method
To write a larger number, certain Roman numerals can be repeated up to three times. For example, CCC → 300.
Rule 3: Subtraction Method
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.
Rule 4: Limitation Rule
The 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 VV for 10; instead, we use X.
Let’s learn how to write 219 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 219 in Roman numerals using the expansion method.
To write 219 in Roman numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc.
For 219, we write it as 200 + 10 + 9.
Step 2: Convert the numbers into Roman numerals.
200 in Roman numerals — CC
10 in Roman numerals — X
9 in Roman numerals — IX
Step 3: Combine the Roman numerals together.
Therefore, 219 in Roman numerals is CC + X + IX = CCXIX.
When writing a large number into Roman numerals, we group the number.
To write 219 in Roman numerals, we group 219 as 200 + 10 + 9.
200 in Roman numerals — CC
10 in Roman numerals — X
9 in Roman numerals — IX
So, 219 is written as CCXIX in Roman numerals.
A historian is transcribing ancient texts and comes across the numbers CCXIX and XXXIX. He needs to find their sum.
An archaeologist discovers a set of CCXIX artifacts buried in a site. If the artifacts are to be evenly distributed among XIX museums, how many artifacts will each museum receive?
A mathematician wants to multiply the Roman numerals IX and XXIV. What is the product? Solution: The product of IX and XXIV is CCXVI.
Find the difference between the numbers CCXIX and LXXXV.
Use the expansion method to write the result of 172 + 47 in Roman numerals.
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.