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Last updated on May 26th, 2025

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904 in Roman Numerals

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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.

904 in Roman Numerals for Vietnamese Students
Professor Greenline from BrightChamps

What is 904 in Roman Numerals?

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.904 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 904 in Roman Numerals

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, VI → V + I → 5 + 1 = 6.

 

Rule 2: Repetition Method

 

To write a large number, certain Roman Numerals can be repeated up to three times. 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, 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 VV for 10; instead, we use X.

Professor Greenline from BrightChamps

How to Write 904 in Roman Numerals

Let’s now learn how to write 904 in Roman Numerals. Follow these methods to write the number in Roman Numerals.

 

  • By Expansion Method
  • By Grouping Method
Professor Greenline from BrightChamps

904 in Roman Numerals by Expansion Method

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.

  • 900 in Roman Numerals - CM
     
  • 4 in Roman Numerals - IV

 

Step 3: Combine the Roman Numerals together. Therefore, 904 in Roman Numerals is CM (900) + IV (4) = CMIV.

Professor Greenline from BrightChamps

904 in Roman Numerals by Grouping Method

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.

 

  • 900 in Roman Numerals - CM
     
  • 4 in Roman Numerals - IV

 

So, 904 is written as CMIV in Roman Numerals.

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Common Mistakes and How to Avoid Them in 904 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.

Mistake 1

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Errors in Repetition Method

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The repetition method can be confusing for beginners as it states that Roman Numerals cannot be repeated more than three times. In contrast, some Roman Numerals such as V, L, and D cannot be repeated.

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904 in Roman Numerals Examples

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Problem 1

Convert CMIV into Arabic numerals and find its square.

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The square of CMIV is 817216.

Explanation

CMIV in Roman numerals is 904 in Arabic numerals.

The square of 904 is 904 × 904 = 817216.

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Problem 2

A library has MCMVIII books, and they want to organize them into CCLX shelves. How many books will each shelf have?

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Each shelf will have VII books.

Explanation

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.

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Problem 3

If you add CMIV and DLXVI, what is the result?

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The sum of CMIV and DLXVI is MDLXX.

Explanation

CMIV = 904

DLXVI = 566

The sum is 904 + 566 = 1470.

1470 in Roman numerals is MCDLXX.

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Problem 4

What is the difference between MM and CMIV?

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The difference between MM and CMIV is MXCVI.

Explanation

MM = 2000

CMIV = 904

The difference is 2000 - 904 = 1096.

1096 in Roman numerals is MXCVI.

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Problem 5

Write the Roman Numeral for 904 - 104 using the expansion method.

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The Roman numeral for 904 - 104 is DCCC.

Explanation

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.

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FAQs on 904 in Roman Numerals

1.What is 900 in Roman Numerals?

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2.How to write 904 in Roman Numerals?

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3.What is 905 in Roman Numerals?

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4.Is CMIV a prime number?

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5.What are the multiples of 904?

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Professor Greenline from BrightChamps

Important Glossaries for 904 in Roman Numerals

  • Addition Rule: The addition method is used when a larger number is followed by a smaller numeral, where the values are added. For example, CMIV = CM + IV = 900 + 4 = 904.
     
  • Grouping Method: In this method, numbers are grouped based on place value and then converted into Roman numerals. For example, 904 = 900 + 4 = CMIV.
     
  • Repetition Rule: Certain symbols (I, X, C, M) in the Roman numerical system can be repeated only up to three times. For example, III = 3 (I is repeated three times to represent the number 3).
     
  • Subtraction Rule: Used when a smaller numeral precedes a larger one, indicating subtraction. For example, CM = M - C = 1000 - 100 = 900.
     
  • Limitation Rule: Roman numerals have limitations on repetition and representation, such as not repeating symbols like V, L, and D.
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Hiralee Lalitkumar Makwana

About the Author

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.

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Fun Fact

: She loves to read number jokes and games.

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