Last updated on May 26th, 2025
Roman numerals are a way of expressing numbers using symbols. The symbols we use are I, V, X, L, C, D, and M. Roman Numerals are used in royal titles, book names, sequences, and more. Here we will discuss 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 fingers, sticks, bones, etc., to count. When life became complex, a standard form was required to count. Ancient Romans developed the Roman Numeral system for counting. 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 CCCV to represent 305, where CCC is 300, and V is 5. Let’s learn more about Roman numerals and how we write them.
There are certain basic rules to write numbers in Roman Numerals. In this section, let’s discuss some basic rules that need to be remembered when writing a number in Roman numerals.
The addition method is used when the smaller number is placed after the larger number. For example, VI → V + I → 5 + 1 = 6
To write a larger number, certain Roman Numerals can be repeated up to three times. For example, CCC → 300.
If a smaller number is placed before a larger number in Roman Numerals, we subtract the smaller number from the larger number. For example, IV → V - I → 5 - 1 = 4
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. Similarly, 8 is written as VIII, not IIIIIIII.
Let’s now learn how to write 305 in Roman Numerals. Follow these methods to write the number in Roman Numerals.
In the expansion method, based on place value, the number is broken down. In this section, we will learn how to write 305 in Roman numerals using the expansion method.
To write 305 in Roman Numerals, follow the steps:
Step 1: Break the number based on place value, i.e., hundreds, tens, and ones.
For 305, we write it as 300 + 5.
Step 2: Convert each number into Roman Numerals:
300 in Roman Numerals — CCC
5 in Roman Numerals — V
Step 3: Combine the Roman Numerals together.
Therefore, 305 in Roman Numerals is CCC (300) + V (5) = CCCV
When writing a large number into Roman Numerals, we group the number.
To write 305 in Roman Numerals, we group 305 as 300 + 5.
300 in Roman Numerals — CCC
5 in Roman Numerals — V
So, 305 is written as CCCV in Roman Numerals.
Students make mistakes when writing numbers in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and the ways to avoid them.
A historian found CCCV ancient coins and decided to distribute them equally among V historians. How many coins will each historian receive?
Each historian will receive LXI coins.
To find the number of coins each historian receives, we divide the total number of coins by the number of historians.
That is CCCV / V.
CCCV = 305
V = 5
Therefore, CCCV / V = 305 / 5 = 61.
61 in Roman Numerals can be written as LXI.
An archaeologist discovered a document that mentioned a transaction of CCXLV and another of LX. What is the total value of these transactions in Roman numerals?
The total value of the transactions is CCCV.
The total value is the result of adding the two amounts.
CCXLV = 245
LX = 60
245 + 60 = 305
305 in Roman Numerals is CCCV.
The total value of CCXLV and LX is CCCV.
A puzzle involves finding the difference between CCCXX and XV. What is the result in Roman Numerals?
The difference between CCCXX and XV is CCCV.
The difference is found by subtracting one number from the other.
CCCXX = 320
XV = 15
320 - 15 = 305
305 in Roman Numerals can be written as CCCV.
The difference between CCCXX and XV is CCCV.
A collector has CCCV rare stamps and decides to sell them in sets of XXI. How many complete sets can the collector sell?
The collector can sell XIV complete sets.
To determine how many complete sets are possible, divide the total number of stamps by the number of stamps per set.
CCCV = 305
XXI = 21
305 / 21 = 14 remainder 11
14 in Roman Numerals is XIV.
The collector can sell XIV complete sets
Convert the sum of 250 and 55 into Roman numerals using the expansion method.
The Roman numeral for 250 + 55 is CCCV.
Step 1: First convert the numbers 250 and 55 into Roman numerals.
250 - CCL
55 - LV
Add the numbers together: 250 + 55 = 305
Using expansion method: 305 = 300 + 5 = CCC + V = CCCV.