Last updated on May 26th, 2025
Roman numerals are the 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, often 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 LXI to represent 61, where L is 50, 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, then it is the addition method. For example, LXI → L + X + I → 50 + 10 + 1 = 61
Rule 2: Repetition Method
To write a large number, there are certain Roman Numerals that can be repeated three times. For example, III → 3.
Rule 3: Subtraction Method
If a smaller number is placed before a larger 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 LL for 100; instead, we use C. And for 8, we write VIII, not IIIIIIII.
Let’s now learn how to write 61 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 61 in Roman numerals using the expansion method.
To write 61 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place value includes ones, tens, hundreds, etc.
For 61, we write it as 50 + 10 + 1
Step 2: Convert the numbers into Roman Numerals:
50 in Roman Numerals — L
10 in Roman Numerals — X
1 in Roman Numerals — I
Step 3: Combine the Roman Numerals together:
Therefore, 61 in Roman Numerals is L (50) + X (10) + I (1) = LXI
When writing a large number into Roman Numerals, we group the number.
To write 61 in Roman Numerals, we group 61 as 50 + 10 + 1.
50 in Roman Numerals — L
10 in Roman Numerals — X
1 in Roman Numerals — I
So, 61 is written as LXI in Roman Numerals.
Students make mistakes when writing numbers in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and ways to avoid them.
Calculate the sum of XXXI and XXX.
The sum of XXXI and XXX is LXI.
In Roman numerals, XXXI is 31 and XXX is 30. The sum of XXXI and XXX is 31 + 30 = 61. 61 in Roman Numerals can be written as LXI.
A librarian has CCCLXV books and wants to distribute them equally among VI shelves. How many books will each shelf have?
Each shelf will have LXI books.
To find the number of books per shelf, divide the total number of books by the number of shelves.
CCCLXV = 365
VI = 6
Therefore, 365 / 6 = 60 with a remainder of 5, meaning each shelf gets 60 books and one shelf will have 61 books overall. 61 in Roman numerals is written as LXI.
Find the difference between CXXII and LXI.
The difference between CXXII and LXI is LXI.
The difference of two numbers is the result of subtracting one number from the other.
CXXII = 122
LXI = 61
122 - 61 = 61
61 in Roman Numerals is LXI.
A puzzle requires converting the sum of XL and XXI into Roman numerals. What is the result?
The Roman numeral for the sum of XL and XXI is LXI.
Convert each number to Roman numerals and find their sum.
XL = 40
XXI = 21
40 + 21 = 61
61 in Roman Numerals is LXI.
Write the Roman numeral for 30 + 31 using the expansion method.
The Roman numeral for 30 + 31 is LXI.
Step 1: First convert the numbers 30 and 31 into Roman numerals.
30 - XXX
31 - XXXI
Add the numbers together: 30 + 31 = 61
Using the expansion method: 61 = 50 + 10 + 1 = LXI.
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.