Table Of Contents
Last updated on February 21st, 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 Roman numerals. Earlier people used to count using fingers, sticks, bones, etc. 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 CCXXVIII to represent 228, where C is 100, X is 10, and I is 1. 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, XXVIII → XX + V + III → 20 + 5 + 3 = 28.
Rule 2: Repetition Method
To write a large number, there are certain Roman numerals that can be repeated up to three times. CCC → 300.
Rule 3: Subtraction Method
If a small number is followed by a large number in Roman numerals, we subtract the smaller number from the larger 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, and for 8, we write VIII, not IIIIIIII.
Let’s now learn how to write 228 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 228 in Roman numerals using the expansion method.
To write 228 in Roman numerals, follow the steps:
Step 1: Break the number based on the place value: ones, tens, hundreds, etc.
For 228, we write it as 200 + 20 + 8.
Step 2: Converting the number into Roman numerals:
200 in Roman numerals — CC
20 in Roman numerals — XX
8 in Roman numerals — VIII
Step 3: Combine the Roman numerals together:
Therefore, 228 in Roman numerals is CC (200) + XX (20) + VIII (8) = CCXXVIII.
When writing a large number into Roman numerals, we group the number.
To write 228 in Roman numerals, we group 228 as 200 + 20 + 8:
200 in Roman numerals — CC
20 in Roman numerals — XX
8 in Roman numerals — VIII
So, 228 is written as CCXXVIII in Roman numerals.
A historian is cataloging ancient artifacts and finds CCXXVIII coins dating back to the Roman Empire. If he wants to display these in groups of IV, how many groups can he make?
An architect is designing a building with CCXXVIII windows. Each floor has XIX windows. Determine how many floors the building will have.
Calculate the sum of CLX and LXVIII.
An artist is creating a mural using CCXXVIII tiles. If she has already used CXIV tiles, how many tiles are left?
Write the Roman Numeral for 200 + 28 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.