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. 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. to count earlier.
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 CCCLXXVII to represent 377. Here, CCC is 300, L is 50, XX is 20, and VII is 7. 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, CCCLXXVII → CCC + L + XX + VII → 300 + 50 + 20 + 7 = 377.
Rule 2: Repetition Method
To write a large number, there are certain Roman Numerals that can be repeated up to three times. For instance, CCC → 300.
Rule 3: Subtraction Method
If a small number is placed before a large number in Roman Numerals, we subtract the smaller number from the larger number. For example, IV → V - I → 5 - 1 = 4.
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.
Let’s now learn how to write 377 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 377 in Roman numerals using the expansion method.
To write 377 in Roman Numerals, follow these steps:
Step 1: Break down the number based on its place value. Place values are hundreds, tens, and ones.
For 377, we write it as 300 + 70 + 7.
Step 2: Convert these numbers into Roman Numerals.
300 in Roman Numeral — CCC
70 in Roman Numeral — LXX
7 in Roman Numeral — VII
Step 3: Combine the Roman Numerals together.
Therefore, 377 in Roman Numeral is CCC (300) + L (50) + XX (20) + VII (7) = CCCLXXVII.
When writing a large number into Roman Numerals, we group the number. To write 377 in Roman Numeral, we group 377 as 300 + 70 + 7.
300 in Roman Numeral — CCC
70 in Roman Numeral — LXX
7 in Roman Numeral — VII
So, 377 is written as CCCLXXVII 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.
Find the product of CLXXVII and II.
The product of CLXXVII and II is CCCLIV.
In Roman numerals, CLXXVII is 177 and II is 2. The product of CLXXVII and II is 177 × 2 = 354. 354 in Roman numerals can be written as CCCLIV.
A librarian has DCCLV books and wants to distribute them equally among CC students. Find the number of books each student will receive.
Each student will receive III books.
To find the number of books a student gets, divide the total number of books by the number of students.
DCCLV = 755
CC = 200
Therefore, DCCLV / CC = 755 / 200 = 3 (ignoring any remainder).
3 in Roman numerals is III.
Find the sum of CL and CCXXVII.
The sum of CL and CCXXVII is CCCLXXVII.
Sum is the result of adding two numbers.
CL = 150
CCXXVII = 227
150 + 227 = 377
377 in Roman numerals is CCCLXXVII.
The sum of CL and CCXXVII is CCCLXXVII.
What is the difference between CD and CXXIII?
The difference between CD and CXXIII is CCLXXVII.
The difference of two numbers is the value we get when subtracting one number from the other.
CD = 400
CXXIII = 123
400 - 123 = 277
277 in Roman numerals can be written as CCLXXVII.
Write the Roman numeral for 200 + 177 using the expansion method.
The Roman numeral for 200 + 177 is CCCLXXVII.
Step 1: First convert the numbers 200 and 177 into Roman numerals.
200 - CC
177 - CLXXVII
Add the numbers together: 200 + 177 = 377
Using the expansion method: 377 = 300 + 70 + 7 = CCCLXXVII.
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.