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Last updated on May 26th, 2025

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126 in roman numerals

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Roman numerals are a way of expressing numbers using symbols. The symbols I, V, X, L, C, D, and M are used in this system. Roman numerals are employed in royal titles, book names, sequences, and more. Here we will be discussing Roman numerals, their rules, and examples.

126 in roman numerals for US Students
Professor Greenline from BrightChamps

What is 126 in Roman Numerals?

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 Roman numerals. In earlier times, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was needed. The ancient Romans used the Roman numeral system. The symbols we use for counting are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).

 

In Roman numerals, we use CXXVI to represent 126, where C is 100, XX is 20 (10+10), and VI is 6 (5+1). Let’s learn more about Roman numerals and how we write them.

126 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 126 in Roman Numerals

There are certain basic rules for writing numbers in Roman numerals. In this section, let’s discuss some basic rules that need to be remembered.

 

Rule 1: Addition Method

The addition method is used when a smaller number is placed after a larger number. For example, VI → V + I → 5 + 1 = 6

 

Rule 2: Repetition Method

To write larger numbers, certain Roman numerals can be repeated up to three times. For example, XX → 20 (10+10).

 

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

Symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we don't write VV for 10; instead, we use X.

Professor Greenline from BrightChamps

How to Write 126 in Roman Numerals

Let’s now learn how to write 126 in Roman numerals. Follow these methods:

 

  • By Expansion Method

 

  • By Grouping Method
Professor Greenline from BrightChamps

126 in Roman Numerals by Expansion Method

In the expansion method, based on the place value, the number is broken down. Here is how to write 126 in Roman numerals using this method:

 

Step 1: Break the number based on place value: hundreds, tens, and ones. 

For 126, we write it as 100 + 20 + 6.


Step 2: Convert each part into Roman numerals:


100 in Roman numerals — C
20 in Roman numerals — XX
6 in Roman numerals — VI


Step 3: Combine them together:


Therefore, 126 in Roman numerals is C (100) + XX (20) + VI (6) = CXXVI

Professor Greenline from BrightChamps

126 in Roman Numerals by Grouping Method

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

 

For 126, we group it as 100 + 20 + 6:
100 in Roman numerals — C
20 in Roman numerals — XX
6 in Roman numerals — VI
So, 126 is written as CXXVI in Roman numerals.

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Common Mistakes and How to Avoid Them in 126 Roman Numerals

Students often make mistakes when writing numbers in Roman numerals. To master Roman numerals, learn about common mistakes and how to avoid them.

Mistake 1

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Errors in the repetition method
 

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The repetition method can be confusing for beginners. Roman numerals cannot be repeated more than three times, and some numerals like V, L, and D cannot be repeated. 
 

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126 in Roman Numerals Examples

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Problem 1

A historian discovers a scroll that mentions a battle involving CLXXVI soldiers. If each squad consisted of XIV soldiers, find out how many complete squads were formed.

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The number of complete squads formed is XII.
 

Explanation

To find the number of squads, divide the total number of soldiers by the number of soldiers per squad.  


CLXXVI = 176  


XIV = 14  


176 / 14 = 12  


12 in Roman numerals is XII.

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Problem 2

An ancient artifact is said to have been created C years after another artifact was made. If the earlier artifact was made in the year MCM, find the year the newer artifact was made.

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The newer artifact was made in the year MMXXVI.
 

Explanation

MCM = 1900  


C = 100  


1900 + 100 = 2000  


2000 in Roman numerals is MM.

 

The newer artifact was made in the year MMXXVI.

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Problem 3

Find the difference between CC and CXXVI.

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The difference between CC and CXXVI is LXXIV.
 

Explanation

CC = 200  


CXXVI = 126  


200  126 = 74  


74 in Roman numerals is LXXIV.

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Problem 4

A collector has CXXVI unique coins and decides to distribute them equally among II friends. How many coins does each friend receive?

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Each friend receives LXIII coins.
 

Explanation

Divide the total number of coins by the number of friends.  


CXXVI = 126  


II = 2  


126 / 2 = 63  


63 in Roman numerals is LXIII.

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Problem 5

Write the Roman numeral for 126 using the expansion method.

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The Roman numeral for 126 is CXXVI.

Explanation

Break down the number into its place values.  


126 = 100 + 20 + 6  


100 in Roman numerals is C  


20 in Roman numerals is XX  


6 in Roman numerals is VI  


Combine them: CXXVI

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FAQs on 126 in Roman Numerals

1.What is 99 in Roman numerals?

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2.How to write 126 in Roman numerals?

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3.What is 130 in Roman numerals?

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4.Is 126 a prime number?

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5.What are the multiples of 126?

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6.How can children in United States use numbers in everyday life to understand 126 in roman numerals?

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7.What are some fun ways kids in United States can practice 126 in roman numerals with numbers?

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8.What role do numbers and 126 in roman numerals play in helping children in United States develop problem-solving skills?

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9.How can families in United States create number-rich environments to improve 126 in roman numerals skills?

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Professor Greenline from BrightChamps

Important Glossaries for 126 in Roman Numerals

  • Addition Rule: The addition method is used when a larger numeral is followed by a smaller one. For example, CXXVI = C + XX + VI = 100 + 20 + 6 = 126.

 

  • Grouping Method: Here, numbers are grouped based on place value and converted to Roman numerals. For example, 126 = 100 + 20 + 6 = CXXVI.

 

  • Repetition Rule: Certain symbols (I, X, C, M) in the Roman numeral system can be repeated up to three times. For example, XX = 20 (X is repeated twice).

 

  • Subtraction Method: This method is used when a smaller numeral precedes a larger one. For example, XC = 90 (C  X = 100  10).

 

  • Limitation Rule: Certain symbols like V, L, and D cannot be repeated. For example, 10 is written as X, not VV.
Professor Greenline from BrightChamps

About BrightChamps in United States

At BrightChamps, we understand numbers are more than symbols—they unlock endless possibilities! Our goal is to guide children across the United States in mastering essential math skills, focusing today on the 126 in roman numerals with special attention to Roman numerals—in a fun, engaging, and easy-to-understand way. Whether your child is calculating how quickly a roller coaster zips through Disney World, tracking scores at Little League baseball games, or budgeting their allowance for cool gadgets, having solid number skills builds their confidence for daily tasks. Our interactive lessons make learning enjoyable and straightforward. Since kids across the USA have unique learning styles, we customize our methods to match each child. From the vibrant streets of New York City to the sunny beaches of California, BrightChamps makes math come alive, relatable, and exciting throughout America. Let’s bring Roman numerals to life on every child’s math path!
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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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