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Last updated on May 26th, 2025

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125 in Roman Numerals

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Roman numerals are a way of expressing numbers using specific symbols: I, V, X, L, C, D, and M. They are often used in royal titles, book titles, sequences, and more. Here, we will discuss Roman numerals, their rules, and examples.

125 in Roman Numerals for US Students
Professor Greenline from BrightChamps

What is 125 in Roman Numerals?

Roman numerals are used in various contexts, such as royal titles like Henry I, Henry II, and so on. You might have noticed the numerals and wondered what these symbols (I, II) represented. Those are Roman numerals. In ancient times, people counted using fingers, sticks, bones, etc. As life grew more complex, a standard form was required for counting. The ancient Romans used the Roman numeral system for this purpose. The symbols I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are used to represent numbers.

 

In Roman numerals, we use CXXV to represent 125. Here, C is 100, X is 10, another X is 10, and V is 5. Let’s learn more about Roman numerals and how we write them.

125 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 125 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, CXXV → C + X + X + V → 100 + 10 + 10 + 5 = 125.

 

Rule 2: Repetition Method

 

To write a large number, certain Roman numerals can be repeated up to three times. For example, XXX → 30.

Rule 3: Subtraction Method

 

If a small number precedes a large number in Roman numerals, we subtract the smaller number from the larger number. For example, XC → X - C → 100 - 10 = 90.

 

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 don't write VV for 10; instead, we use X. For 8, we write VIII, not IIIIIIII.

Professor Greenline from BrightChamps

How to Write 125 in Roman Numerals

Let’s now learn how to write 125 in Roman numerals. Follow these methods to write the number in Roman numerals.

 

  • By Expansion Method

 

  • By Grouping Method
     
Professor Greenline from BrightChamps

125 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 125 in Roman numerals using the expansion method.

 

To write 125 in Roman numerals, follow the steps:

 

Step 1: Break down the number based on place value. For 125, we write it as 100 + 20 + 5.

 

Step 2: Convert the numbers into Roman numerals:
 100 in Roman numeral — C
 20 in Roman numeral — XX
 5 in Roman numeral — V

 

Step 3: Combine the Roman numerals together. Therefore, 125 in Roman numeral is C (100) + XX (20) + V (5) = CXXV.

Professor Greenline from BrightChamps

125 in Roman Numeral by Grouping Method

When writing a large number in Roman numerals, we group the number. To write 125 in Roman numerals, we group 125 as 100 + 20 + 5:
 100 in Roman numeral — C
 20 in Roman numeral — XX
 5 in Roman numeral — V

 

So, 125 is written as CXXV in Roman numerals.

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Common Mistakes and How to Avoid Them in 125 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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125 in Roman Numerals Examples

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Problem 1

A historian is deciphering an ancient text that mentions two armies, one with CL soldiers and another with LXXV soldiers. Find the total number of soldiers when the two armies combine.

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The total number of soldiers is CCXXV.
 

Explanation

In Roman numerals, CL is 150 and LXXV is 75. Adding them together gives 150 + 75 = 225. 225 in Roman numerals can be written as CCXXV.

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Max, the Girl Character from BrightChamps

Problem 2

An archaeologist discovers a set of ancient coins, CXXV in total, and wants to distribute them equally among V artifacts. How many coins will each artifact receive?

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Each artifact will receive XXV coins.

Explanation

To find the number of coins per artifact, divide the total number of coins by the number of artifacts: CXXV / V. 


CXXV = 125


V = 5


Therefore, 125 / 5 = 25.


25 in Roman numerals is XXV.

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Max, the Girl Character from BrightChamps

Problem 3

A library has CXXV scrolls and plans to acquire another L scrolls. What will be the total number of scrolls in the library?

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The total number of scrolls will be CLXXV.

Explanation

The sum is the result of adding two numbers.


CXXV = 125


L = 50


125 + 50 = 175


175 in Roman numerals is CLXXV.

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Max, the Girl Character from BrightChamps

Problem 4

A merchant has CXL apples and sells XV apples. How many apples remain with the merchant?

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The number of apples remaining is CXXV.
 

Explanation

The difference is the result of subtracting one number from another.


CXL = 140


XV = 15


140  15 = 125


125 in Roman numerals is CXXV.

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Max, the Girl Character from BrightChamps

Problem 5

Express the sum of 75 and 50 in Roman numerals using the expansion method.

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The Roman numeral for 75 + 50 is CXXV.
 

Explanation

First, convert the numbers 75 and 50 into Roman numerals:


75  LXXV


50  L

Add the numbers together: 75 + 50 = 125


Using the expansion method: 125 = 100 + 20 + 5 = CXXV.

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FAQs on 125 in Roman Numerals

1.What is 90 in Roman numerals?

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2.How to write 125 in Roman numerals?

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3.What is 200 in Roman numerals?

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4.Is 125 a prime number?

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5.What are the multiples of 125?

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6.How can children in United States use numbers in everyday life to understand 125 in Roman Numerals?

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7.What are some fun ways kids in United States can practice 125 in Roman Numerals with numbers?

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8.What role do numbers and 125 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 125 in Roman Numerals skills?

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Professor Greenline from BrightChamps

Important Glossary for 125 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, CXXV = C + XX + V = 100 + 20 + 5 = 125.

 

  • Grouping method: Here, the given numbers are grouped based on their place value and then converted into Roman numerals. For example, 125 = 100 + 20 + 5 = CXXV.

 

  • Repetition rule: Certain symbols (I, X, C, M) in the Roman numeral system can be repeated only up to three times. For example, XXX = 30 (X is repeated three times to represent the number 30).

 

  • Subtraction rule: The subtraction method is used when a smaller number precedes a larger one, and the smaller value is subtracted from the larger. For example, XC = 90.

 

  • Limitation rule: Some symbols cannot be repeated more than three times, and certain symbols like V, L, and D cannot be repeated at all.
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 125 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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