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Last updated on May 26th, 2025

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242 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.

242 in Roman Numerals for Canadian Students
Professor Greenline from BrightChamps

What is 242 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 fingers, sticks, bones, etc., to count. As life became more complex, a standard form was required. 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 CCXLII to represent 242; here, C is 100, X is 10, L is 50, and II is 2. Let’s learn more about Roman numerals and how we write them.
 

242 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 242 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 a smaller number is placed after a larger number. For example, XII → X + I + I → 10 + 1 + 1 = 12

Rule 2: Repetition Method

To write a large number, certain Roman numerals can be repeated up to three times. For example, CCC → 300.

Rule 3: Subtraction Method

If a small number is followed by a large number in Roman numerals, we subtract the smaller number from the large number. For example, IX → X - I → 10 - 1 = 9

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. For 8, we write VIII, not IIIIIIII.
 

Professor Greenline from BrightChamps

How to Write 242 in Roman Numerals

Let’s now learn how to write 242 in Roman numerals. Follow these methods to write the number in Roman numerals.

 

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

242 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 242 in Roman numerals using the expansion method.

To write 242 in Roman numerals, follow the steps:

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

For 242, we write it as 200 + 40 + 2  

Step 2: Converting the numbers into Roman numerals:  

 

  • 200 in Roman numeral - CC  
  • 40 in Roman numeral - XL  
  • 2 in Roman numeral - II  


Step 3: Combine the Roman numerals together.  
Therefore, 242 in Roman numerals is CC (200) + XL (40) + II (2) = CCXLII
 

Professor Greenline from BrightChamps

242 in Roman Numerals by Grouping Method

When writing a large number into Roman numerals, we group the number.  
To write 242 in Roman numerals, we group 242 as 200 + 40 + 2:  
200 in Roman numeral — CC  
40 in Roman numeral — XL  
2 in Roman numeral — II  
So, 242 is written as CCXLII in Roman numerals.
 

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Common Mistakes and How to Avoid Them in 242 Roman Numerals

Students 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 of the Roman numerals such as V, L, and D cannot be repeated.

Mistake 2

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Subtracting the wrong numerals
 

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Confusing the subtraction method, which is used when a smaller number precedes a higher value. For example, writing IC for 99 instead of XCIX.

Mistake 3

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Incorrect grouping

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When writing a large number in Roman numerals, we should group the numbers. For example, 60 is written as XXXXXXX instead of LX.

Mistake 4

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Confusing Arabic and Roman Numerals

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Students tend to confuse Arabic and Roman numerals. To avoid such errors, students need to understand the basic concepts. Arabic numbers use the numbering system with 1, 2, 3,..., whereas Roman numerals use symbols such as I, V, X, L, etc.

Mistake 5

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Confusing subtraction and addition
 

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Students are confused by the addition and subtraction methods. When a larger number follows a smaller one, we use the addition method; when a smaller number precedes a larger number, we use the subtraction method. For example, IV = I(1) - V(5) = 5 - 1 = 4. XV is 15, not 5, as X(10) + V(5) = 15.

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242 in Roman Numerals Examples

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Problem 1

Solve the equation by finding the sum of CC and XLII.

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The sum of CC and XLII is CCXLII.
 

Explanation

Convert each Roman numeral to its decimal form:  
CC = 200  
XLII = 42  
Add the two numbers: 200 + 42 = 242  
Convert 242 to Roman numerals: CCXLII  
Thus, the sum of CC and XLII is CCXLII.
 

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Problem 2

A historian is cataloging ancient manuscripts and finds that there are CCCCLXXXIV pages in total, spread across II volumes. Determine the number of pages per volume.

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Each volume contains CCXLII pages.

Explanation

To find the pages per volume, divide the total number of pages by the number of volumes:  
CCCCLXXXIV = 484  
II = 2  
484 / 2 = 242  
242 in Roman numerals is CCXLII.  
Therefore, each volume contains CCXLII pages.
 

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Max, the Girl Character from BrightChamps

Problem 3

Determine the product of VI and XLVII.

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The product of VI and XLVII is CCXLII.
 

Explanation

First, convert Roman numerals to decimal:  
VI = 6  
XLVII = 47  
Multiply the two numbers: 6 × 47 = 282  
Convert 282 to Roman numerals: CCLXXXII  
Thus, the product of VI and XLVII is CCLXXXII.
 

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Max, the Girl Character from BrightChamps

Problem 4

Find the difference between CCXLII and L.

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The difference between CCXLII and L is CXCII.

Explanation

Convert each Roman numeral to its decimal form:  
CCXLII = 242  
L = 50  
Subtract the second number from the first: 242 - 50 = 192  
Convert 192 to Roman numerals: CXCII  
Therefore, the difference between CCXLII and L is CXCII.
 

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Max, the Girl Character from BrightChamps

Problem 5

Using the expansion method, express 242 as a sum of Roman numerals.

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 The Roman numeral for 242 using expansion is CCXLII.
 

Explanation

Break 242 into its Roman numeral components:  
242 = 200 + 40 + 2  
200 = CC  
40 = XL  
2 = II  
Combine to get CCXLII.  
Thus, 242 in Roman numerals using the expansion method is CCXLII.
 

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FAQs on 242 in Roman Numerals

1.What is 240 in Roman numerals?

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2.How to write 242 in Roman numerals?

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3.What is 246 in Roman Numerals?

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4. Is CCXLII a prime number?

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5.What are the multiples of 242?

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6.How can children in Canada use numbers in everyday life to understand 242 in Roman Numerals?

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7.What are some fun ways kids in Canada can practice 242 in Roman Numerals with numbers?

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8.What role do numbers and 242 in Roman Numerals play in helping children in Canada develop problem-solving skills?

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9.How can families in Canada create number-rich environments to improve 242 in Roman Numerals skills?

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Professor Greenline from BrightChamps

Important Glossaries for 242 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, CCXLII = CC + XL + II = 200 + 40 + 2 = 242.

Grouping Method: Numbers are grouped based on their place value, then converted to Roman numerals. For example, 242 = 200 + 40 + 2 = CCXLII.

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

Subtraction Rule: When a smaller numeral precedes a larger numeral, the smaller is subtracted from the larger. For example, XL = L - X = 50 - 10 = 40.

Limitation Rule: Some symbols like V, L, and D cannot be repeated. For example, 10 is written as X, not VV.
 

Professor Greenline from BrightChamps

About BrightChamps inCanada

At BrightCHAMPS, we know numbers are more than just symbols they open doors to limitless possibilities! Our mission is to support kids across Canada in learning vital math skills, concentrating today on the 242 in Roman Numerals with an emphasis on Roman numerals in an engaging, easy, and enjoyable way. Whether your child is figuring out how fast a ride zooms through Canada’s Wonderland, following scores at a hockey game, or managing their allowance to buy new gadgets, mastering numbers empowers them with confidence for daily life. Our interactive lessons simplify learning while making it fun. Since Canadian children learn in different ways, we adapt our teaching to suit each child. From the lively streets of Toronto to British Columbia’s beautiful landscapes, BrightCHAMPS makes math exciting and relevant all over Canada. Let’s bring Roman numerals into every child’s learning adventure!
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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.

Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

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