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Last updated on May 26th, 2025

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240 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.

240 in roman numerals for Vietnamese Students
Professor Greenline from BrightChamps

240 in roman numerals

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 CCXL to represent 240, where CC is 200, XL is 40. Let’s learn more about Roman numerals and how we write them.

240 in roman numerals

 

 

 

Professor Greenline from BrightChamps

Basic Rules for 240 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, there are certain Roman Numerals that can be repeated up to three times. For example, 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 large 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 XXC for 120 instead we use CXX.

Professor Greenline from BrightChamps

How to Write 240 in Roman Numerals

Let’s now learn how to write 240 in Roman Numerals. Follow these methods to write the number in Roman Numerals. 

 

  • By Expansion Method  

 

  • By Grouping Method
Professor Greenline from BrightChamps

240 in Roman Numeral 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 240 in Roman numerals using the expansion method.

 

To write 240 in Roman Numerals, follow these steps:

 

Step 1: Break the number based on the place value. Place value that is ones, tens, hundreds, etc.

For 240, write it as 200 + 40

 

Step 2: Converting the number into Roman Numerals

 

200 in Roman Numerals — CC  
40 in Roman Numerals — XL  

 

Step 3: Combine the Roman Numerals together.

Therefore, 240 in Roman Numerals is CC (200) + XL (40) = CCXL

Professor Greenline from BrightChamps

240 in Roman Numeral by Grouping Method

When writing a large number in Roman Numerals, we group the numbers.

 

To write 240 in Roman Numerals, we group 240 as 200 + 40  


200 in Roman Numerals — CC  


40 in Roman Numerals — XL  


So, 240 is written as CCXL in Roman Numerals.

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Common Mistakes and How to Avoid Them in 240 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.
 

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 certain Roman Numerals cannot be repeated more than three times. In contrast, some of the Roman Numerals such as V, L, and D cannot be repeated.
 

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240 in Roman Numerals Examples

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Problem 1

A historian finds a scroll with the calculation CCXL divided by VIII. Determine the result and express it in Roman numerals.

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The result of CCXL divided by VIII is XXX.
 

Explanation

CCXL = 240  


VIII = 8  


To find the result, perform the division: 240 ÷ 8 = 30.  


30 in Roman numerals is XXX.

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Problem 2

An ancient architect is tasked with building a structure using CCXL stones, distributed evenly over XX layers. Find out how many stones will be in each layer and express it in Roman numerals.

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Each layer will have XII stones.
 

Explanation

CCXL = 240  


XX = 20  


To find the number of stones per layer, divide the total number of stones by the number of layers: 240 ÷ 20 = 12.  


12 in Roman numerals is XII.

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Problem 3

Calculate the sum of CLV and LXXXV using Roman numerals.

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The sum of CLV and LXXXV is CCXL.
 

Explanation

CLV = 155  


LXXXV = 85  


The sum is 155 + 85 = 240.  


240 in Roman numerals is CCXL.

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Problem 4

An archaeologist discovers two artifacts weighing CX and CXXX respectively. Determine the total weight of the artifacts combined, expressed in Roman numerals.

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The total weight of the artifacts is CCXL.

Explanation

CX = 110  


CXXX = 130  


The total weight is 110 + 130 = 240.

 
240 in Roman numerals is CCXL.

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Problem 5

Express the result of multiplying XX by XII in Roman numerals.

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The result of multiplying XX by XII is CCXL.
 

Explanation

XX = 20  


XII = 12  


The product is 20 × 12 = 240.  


240 in Roman numerals is CCXL.

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FAQs on 240 in Roman Numerals

1.What is 90 in Roman numerals?

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2.How to write 240 in Roman numerals?

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3.What is 300 in Roman Numerals?

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4.Is CCXL a prime number?

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5.What are the multiples of 240?

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Professor Greenline from BrightChamps

Important Glossary for 240 in Roman Numerals

  • Addition rule: The addition method is used when a large number is followed by a smaller numeral; here, the values are added. For example, CCXL = CC + XL = 200 + 40 = 240.

 

  • Grouping method: Here, the given numbers are grouped based on their place value and then converted into their Roman numerals. For example, 240 = 200 + 40 = CCXL.

 

  • Repetition rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, CCC = 300 (C is repeated three times to represent the number 300).

 

  • Subtraction rule: Used when a smaller numeral precedes a larger numeral, indicating subtraction. For example, XL = 50 - 10 = 40.

 

  • Place value: Refers to the value of each digit in a number based on its position. For example, in 240, 2 is in the hundreds place.
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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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