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, 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. As 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 CMIV to represent 904, where CM is 900 and IV is 4. 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.
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 large number, certain Roman Numerals can be repeated up to three times. III → 3.
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.
Let’s now learn how to write 904 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 904 in Roman numerals using the expansion method. To write 904 in Roman Numerals, follow the steps,
Step 1: Break the number based on the place value. Place value includes ones, tens, hundreds, etc. For 904, we write it as 900 + 4.
Step 2: Convert the number into Roman Numerals.
Step 3: Combine the Roman Numerals together. Therefore, 904 in Roman Numerals is CM (900) + IV (4) = CMIV.
When writing a large number into a Roman Numeral, we group the number. To write 904 in Roman Numerals, we group 904 as 900 + 4.
So, 904 is written as CMIV in Roman Numerals.
Students often make mistakes when writing numbers in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and ways to avoid them.
Convert CMIV into Arabic numerals and find its square.
The square of CMIV is 817216.
CMIV in Roman numerals is 904 in Arabic numerals.
The square of 904 is 904 × 904 = 817216.
A library has MCMVIII books, and they want to organize them into CCLX shelves. How many books will each shelf have?
Each shelf will have VII books.
To find the number of books per shelf, divide the total number of books by the number of shelves.
MCMVIII = 1908
CCLX = 260
1908 / 260 ≈ 7.34, which rounds down to 7.
7 in Roman numerals is VII.
If you add CMIV and DLXVI, what is the result?
The sum of CMIV and DLXVI is MDLXX.
CMIV = 904
DLXVI = 566
The sum is 904 + 566 = 1470.
1470 in Roman numerals is MCDLXX.
What is the difference between MM and CMIV?
The difference between MM and CMIV is MXCVI.
MM = 2000
CMIV = 904
The difference is 2000 - 904 = 1096.
1096 in Roman numerals is MXCVI.
Write the Roman Numeral for 904 - 104 using the expansion method.
The Roman numeral for 904 - 104 is DCCC.
Step 1: First convert the numbers 904 and 104 to Roman numerals.
904 - CMIV
104 - CIV
Subtract the numbers:
904 - 104 = 800
Using the expansion method: 800 = DCCC.
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.