180 LearnersLast updated on May 26th, 2025
389 in roman numerals
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.
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.
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.
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
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.
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.
Numbers Related to 389 in Roman Numerals
Roman Numerals follow a certain pattern, making them look similar. In this section, we will learn some numbers related to the Roman numeral 389.
CCCLXXXIX = 389
CCCXC = 390
CCCXCI = 391
CCCXCII = 392
CCCXCIII = 393
CCCXCIV = 394
CCCXCV = 395
CCCXCVI = 396
CCCXCVII = 397
CCCXCVIII = 398
| Number | Roman Numeral | Breakdown |
|---|---|---|
| 380 | CCCLXXX | 300 + 80 = 380 |
| 381 | CCCLXXXI | 380 + 1 = 381 |
| 382 | CCCLXXXII | 380 + 2 = 382 |
| 383 | CCCLXXXIII | 380 + 3 = 383 |
| 384 | CCCLXXXIV | 380 + 4 = 384 |
| 385 | CCCLXXXV | 380 + 5 = 385 |
| 386 | CCCLXXXVI | 380 + 6 = 386 |
| 387 | CCCLXXXVII | 380 + 7 = 387 |
| 388 | CCCLXXXVIII | 380 + 8 = 388 |
| 389 | CCCLXXXIX | 380 + 9 = 389 |
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
Errors in repetition method
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
Subtracting the wrong numerals
Confusing the subtraction method is a common error; the subtraction method is used when a smaller number precedes the higher value. For example, writing IL for 49 instead of XLIX.
Mistake 3
Incorrect grouping
When writing a large number in Roman Numerals, we should group the number. For example, writing 6 as IIIIII instead of VI.
Mistake 4
Confusing with Arabic and Roman Numerals
Students tend to be confused with Arabic and Roman Numerals; to avoid such errors, students need to understand the basic concepts. Arabic numbers are the numbering system using 1, 2, 3,..., whereas Roman Numerals are the numbering system using symbols such as I, V, X, L, …
Mistake 5
Confusing subtraction and addition
Students are often confused by the addition and subtraction methods. When the large number follows the small, we use the addition method; when the smaller number precedes the large number, we use the subtraction method. For example, IV = V(5) - I(1) = 4, while XV is 15, not 5, as 10(X) + 5(V) = 15.
389 in Roman Numerals Examples
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?
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.
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?
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.
Problem 3
A collector has CCCLXXXIX coins and wants to add XLV more. What will be the total number of coins?
The total number of coins is CDXXXIV.
Explanation
CCCLXXXIX = 389
XLV = 45
389 + 45 = 434
434 in Roman numerals is CDXXXIV.
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?
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.
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?
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.
FAQs on 389 in Roman Numerals
1.What is 9 in Roman numerals?
2.How to write 389 in Roman numerals?
3.What is 400 in Roman Numerals?
4.Is CCCLXXXIX a prime number?
5.What are the multiples of 389?
6.How can children in United States use numbers in everyday life to understand 389 in roman numerals?
7.What are some fun ways kids in United States can practice 389 in roman numerals with numbers?
8.What role do numbers and 389 in roman numerals play in helping children in United States develop problem-solving skills?
9.How can families in United States create number-rich environments to improve 389 in roman numerals skills?
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.
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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.
Fun Fact
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