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 more 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 CCCL to represent 350, where C is 100, L is 50, and C is repeated three times to represent 300. 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, CCCL → C + C + C + L → 100 + 100 + 100 + 50 = 350.
Rule 2: Repetition Method
To write a large number, certain Roman Numerals can be repeated up to three times. CCC → 300, since C is repeated three times.
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, XL → L - X → 50 - 10 = 40.
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 350 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 350 in Roman numerals using the expansion method.
To write 350 in Roman Numerals, follow these steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc.
For 350, we write it as 300 + 50.
Step 2: Converting the number into Roman Numerals:
- 300 in Roman Numerals — CCC
- 50 in Roman Numerals — L
Step 3: Combine the Roman Numerals together.
Therefore, 350 in Roman Numerals is CCC (300) + L (50) = CCCL.
When writing a large number into Roman Numerals, we group the number.
To write 350 in Roman Numerals, we group 350 as 300 + 50:
- 300 in Roman Numerals — CCC
- 50 in Roman Numerals — L
So, 350 is written as CCCL 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 is cataloging ancient artifacts and has CCCL items. She needs to divide them equally among L groups. How many items will each group receive?
Each group will receive VII items.
To find the number of items each group receives, divide the total number of items by the number of groups.
CCCL = 350
L = 50
350 / 50 = 7
7 in Roman Numerals is VII.
Calculate the sum of CLXXV and CLXXV.
The sum of CLXXV and CLXXV is CCCL.
The sum is the result of adding two numbers.
CLXXV = 175
Adding them: 175 + 175 = 350
350 in Roman Numerals is CCCL.
Find the difference between CD and L.
The difference between CD and L is CCCL.
The difference is the result of subtracting one number from another.
CD = 400
L = 50
400 - 50 = 350
350 in Roman Numerals is CCCL.
Convert the sum of CC and CL to Roman numerals using the expansion method.
The Roman numeral for CC + CL is CCCL.
First, convert the numbers to Roman numerals:
CC = 200
CL = 150
Add the numbers together: 200 + 150 = 350
Using the expansion method: 350 = 300 + 50 = CCCL
A puzzle requires arranging CCCL marbles into X equal piles. How many marbles will each pile contain?
Each pile will contain XXXV marbles.
Divide the total number of marbles by the number of piles.
CCCL = 350
X = 10
350 / 10 = 35
35 in Roman Numerals is XXXV.
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.