Last updated on May 26th, 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 the 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 CI to represent 101, where C is 100 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 a smaller number is placed after the larger number. For example, CI → C + I → 100 + 1 = 101
Rule 2: Repetition Method
To write a large number, there are certain Roman Numerals that can be repeated three times. For example, 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 large number, which is a subtraction method. For example, XC → C - X → 100 - 10 = 90
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 101 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 101 in Roman numerals using the expansion method.
To write 101 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc.
For 101, we write it as 100 + 1.
Step 2: Convert the numbers into Roman Numerals.
100 in Roman Numerals - C
1 in Roman Numerals - I
Step 3: Combine the Roman Numerals together.
Therefore, 101 in Roman Numerals is C (100) + I (1) = CI.
When writing a large number in Roman Numerals, we group the number.
To write 101 in Roman Numerals, we group 101 as 100 + 1:
So, 101 is written as CI in Roman Numerals.
Students make mistakes when writing a number in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and ways to avoid them.
A historian discovered a manuscript from the year CI. If the manuscript was 47 years older than another document from the same era, what year was the second document written?
The second document was written in LIV.
The year CI represents 101.
The second document is 47 years younger than the year 101.
Therefore, 101 - 47 = 54.
54 in Roman Numerals is LIV.
An archaeologist found a chest with CI golden coins and wants to distribute them equally among V archaeologists. How many coins will each archaeologist receive?
Each archaeologist will receive XX coins.
CI = 101
V = 5
101 divided by 5 is 20.
20 in Roman Numerals is XX.
A collector has a collection of XCIX rare stamps and acquires II more. How many stamps does the collector have in total?
he collector now has CI stamps.
XCIX = 99
II = 2
99 + 2 = 101
101 in Roman Numerals is CI.
A teacher prepares CI questions for an exam but decides to remove IX questions at the last minute. How many questions remain?
There are XCII questions remaining.
CI = 101
IX = 9
101 - 9 = 92
92 in Roman Numerals is XCII.
Write the Roman Numeral for 101 - 33 using the expansion method.
The Roman numeral for 101 - 33 is LXVIII.
Step 1: First convert the numbers 101 and 33 into Roman numerals.
101 - CI
33 - XXXIII
Subtract the numbers: 101 - 33 = 68
Using the expansion method: 68 = 50 + 10 + 8 = LXVIII
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.