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Last updated on May 26th, 2025

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389 in roman numerals

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Roman numerals are the 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.

389 in roman numerals for US Students
Professor Greenline from BrightChamps

What is 389 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 CCCLXXXIX to represent 389. Here, CCC is 300, LXXX is 80, and IX is 9. Let’s learn more about Roman numerals and how we write them.

389 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 389 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, LXXX → L + X + X + X → 50 + 10 + 10 + 10 = 80

 

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 → 100 + 100 + 100 = 300.

 

Rule 3: Subtraction Method

If a smaller number precedes a larger number in Roman Numerals, we subtract the smaller number from the larger 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, and we write 8 as VIII, not IIIIIIII.

Professor Greenline from BrightChamps

How to Write 389 in Roman Numerals

Let’s now learn how to write 389 in Roman Numerals. Follow these methods to write the number in Roman Numerals.

 

  • By Expansion Method

 

  • By Grouping Method
Professor Greenline from BrightChamps

389 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 389 in Roman numerals using the expansion method.

 

To write 389 in Roman Numerals, follow the steps:

 

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

 

For 389, we write it as 300 + 80 + 9.

 

Step 2: Converting the number into Roman Numerals:


300 in Roman Numerals — CCC


80 in Roman Numerals — LXXX


9 in Roman Numerals — IX

 

Step 3: Combine the Roman Numerals together.


Therefore, 389 in Roman Numerals is CCC (300) + LXXX (80) + IX (9) = CCCLXXXIX.

Professor Greenline from BrightChamps

389 in Roman Numeral by Grouping Method

When writing a large number into Roman Numerals, we group the number. To write 389 in Roman Numerals, we group 389 as 300 + 80 + 9.


300 in Roman Numerals — CCC


80 in Roman Numerals — LXXX


9 in Roman Numerals — IX


So, 389 is written as CCCLXXXIX in Roman Numerals.

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Common Mistakes and How to Avoid Them in 389 Roman Numerals

Students make mistakes when writing a number 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 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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389 in Roman Numerals Examples

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Problem 1

A historian is deciphering an ancient scroll that mentions a treasure hidden for CCCLXXXIX years. How would the historian write this number in Roman numerals?

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The number 389 in Roman numerals is CCCLXXXIX.
 

Explanation

The number 389 is composed of hundreds, tens, and units:

300 is written as CCC

80 is written as LXXX

9 is written as IX

Combining these, 389 becomes CCCLXXXIX.
 

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Problem 2

An architect is planning a building with a total of CCCLXXXIX windows, arranged equally on XL floors. How many windows will each floor have?

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Each floor will have IX windows.
 

Explanation

To find the number of windows per floor, divide the total number of windows by the number of floors:


CCCLXXXIX = 389


XL = 40


389 ÷ 40 = 9.725, but since you can't have a fraction of a window, each floor will have 9 windows, written as IX in Roman numerals.

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Problem 3

A collector has CCCLXXXIX coins and wants to add XLV more. What will be the total number of coins?

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The total number of coins is CDXXXIV.
 

Explanation

CCCLXXXIX = 389

XLV = 45

389 + 45 = 434

434 in Roman numerals is CDXXXIV.

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Problem 4

An ancient manuscript describes a festival celebrated every CCCLXXXIX days. How often is the festival held in a year, assuming a year has CCCLXV days?

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The festival is held once a year.
 

Explanation

To determine how often the festival is held:

CCCLXXXIX = 389

CCCLXV = 365

Since 389 days exceed 365 days, the festival is held approximately once a year.
 

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Problem 5

A library received a donation of CCCLXXXIX books, which will be distributed equally among VII sections. How many books will each section receive?

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Each section will receive LV books.
 

Explanation

To find out how many books each section gets:

CCCLXXXIX = 389

VII = 7

389 ÷ 7 = 55.571, but since books must be whole, each section receives 55 books, which is LV in Roman numerals.
 

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FAQs on 389 in Roman Numerals

1.What is 9 in Roman numerals?

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2.How to write 389 in Roman numerals?

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3.What is 400 in Roman Numerals?

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4.Is CCCLXXXIX a prime number?

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5.What are the multiples of 389?

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6.How can children in United States use numbers in everyday life to understand 389 in roman numerals?

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7.What are some fun ways kids in United States can practice 389 in roman numerals with numbers?

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8.What role do numbers and 389 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 389 in roman numerals skills?

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Professor Greenline from BrightChamps

Important Glossaries for 389 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, CCCLXXXIX = CCC + LXXX + IX = 300 + 80 + 9 = 389.

 

  • Grouping method: Here, the given number is grouped based on its place value, and then we convert each group into its Roman numerals. For example, 389 = 300 + 80 + 9 = CCCLXXXIX.

 

  • 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: This method is used when a smaller numeral precedes a larger one, and the smaller numeral is subtracted from the larger numeral. For example, IX = X  I = 9.

 

  • Limitation rule: Some symbols like V, L, and D cannot be repeated, and no symbol can be repeated more than three times. For example, 50 is represented as L, not XXXXX.
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 389 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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Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

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