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Last updated on May 26th, 2025

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2018 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.

2018 in Roman Numerals for Indonesian Students
Professor Greenline from BrightChamps

What is 2018 in Roman Numerals?

The royal titles, such as Henry VIII or Louis XIV, are often denoted in Roman numerals. These symbols represent numbers, and the Roman Numeral system was used by the ancient Romans for counting.

 

The symbols I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are used. In Roman Numerals, 2018 is represented as MMXVIII, where MM is 2000, X is 10, V is 5, and III is 3.

 

Let's learn more about Roman numerals and how we write them.

2018 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 2018 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, XVIII → X + V + III → 10 + 5 + 3 = 18.

 

Rule 2: Repetition Method

 

To write larger numbers, certain Roman Numerals can be repeated up to three times. For example, III → 3.

 

Rule 3: Subtraction Method

 

If a smaller number precedes a larger number, it is subtracted. For example, IV → V - I → 5 - 1 = 4.

 

Rule 4: Limitation Rule

 

Symbols cannot be repeated more than three times, and certain symbols like V, L, and D cannot be repeated. For example, we do not write VV for 10; instead, we use X.

Professor Greenline from BrightChamps

How to Write 2018 in Roman Numerals

Let’s now learn how to write 2018 in Roman Numerals. Follow these methods to write the number in Roman Numerals.

 

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

2018 in Roman Numeral by Expansion Method

In the expansion method, the number is broken down based on place value. In this section, we will learn how to write 2018 in Roman numerals using the expansion method.

 

To write 2018 in Roman Numerals, follow the steps:

 

Step 1: Break the number based on place value, i.e., thousands, hundreds, tens, and units.

 

For 2018, we write it as 2000 + 10 + 5 + 3.

 

Step 2: Convert each part into Roman Numerals.

 

2000 in Roman Numerals — MM

10 in Roman Numerals — X

5 in Roman Numerals — V

3 in Roman Numerals — III

 

Step 3: Combine the Roman Numerals together.

 

Therefore, 2018 in Roman Numerals is MM (2000) + X (10) + V (5) + III (3) = MMXVIII.

Professor Greenline from BrightChamps

2018 in Roman Numeral by Grouping Method

When writing a large number in Roman Numerals, we group the number.

 

To write 2018 in Roman Numerals, we group 2018 as 2000 + 10 + 5 + 3.

 

2000 in Roman Numerals — MM

 

10 in Roman Numerals — X

 

5 in Roman Numerals — V

 

3 in Roman Numerals — III

 

So, 2018 is written as MMXVIII in Roman Numerals.

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Common Mistakes and How to Avoid Them in 2018 Roman Numerals

Students make mistakes when writing a number 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. Additionally, some Roman Numerals like V, L, and D cannot be repeated.

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2018 in Roman Numerals Examples

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Max, the Girl Character from BrightChamps

Problem 1

Calculate the sum of MMX and VIII.

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The sum of MMX and VIII is MMXVIII.

Explanation

To find the sum of MMX and VIII, convert them to Arabic numerals:

 

MMX = 2010

 

VIII = 8

 

The sum is 2010 + 8 = 2018.

 

2018 in Roman Numerals is MMXVIII.

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Problem 2

A library has MMMXVI books and receives II more boxes, each containing I book. How many books are now in the library?

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The library now has MMXVIII books.

Explanation

Initially, the library had MMMXVI books (3016 in Arabic numerals).

 

Receiving II boxes with I book each adds 2 more books.

 

The new total is 3016 + 2 = 3018.

 

3018 in Roman Numerals is MMXVIII.

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Problem 3

Subtract DCCC from MMXVIII.

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The result of subtracting DCCC from MMXVIII is MCCCXVIII.

Explanation

Convert the Roman numerals to Arabic numerals:

 

MMXVIII = 2018

 

DCCC = 800

 

Subtract: 2018 - 800 = 1218

 

Then convert 1218 to Roman Numerals, which is MCCCXVIII.

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Max, the Girl Character from BrightChamps

Problem 4

Divide MMXVIII by IX and express the quotient in Roman numerals.

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The quotient is CCXXIV.

Explanation

Convert the Roman numerals to Arabic numerals:

 

MMXVIII = 2018

 

IX = 9

 

Divide: 2018 / 9 = 224

 

Convert 224 to Roman Numerals, which is CCXXIV.

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Max, the Girl Character from BrightChamps

Problem 5

Convert the sum of MXVIII and M to Roman numerals.

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The sum is MMXVIII.

Explanation

Convert the Roman numerals to Arabic numerals:

 

MXVIII = 1018

 

M = 1000

 

Add: 1018 + 1000 = 2018

 

Convert 2018 to Roman Numerals, which is MMXVIII.

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FAQs on 2018 in Roman Numerals

1.What is 9 in Roman numerals?

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2.How to write 2018 in Roman numerals?

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3.What is 16 in Roman Numerals?

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4.Is MMXVIII a prime number?

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5.What are the multiples of 11?

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6.How can children in Indonesia use numbers in everyday life to understand 2018 in Roman Numerals?

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7.What are some fun ways kids in Indonesia can practice 2018 in Roman Numerals with numbers?

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8.What role do numbers and 2018 in Roman Numerals play in helping children in Indonesia develop problem-solving skills?

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9.How can families in Indonesia create number-rich environments to improve 2018 in Roman Numerals skills?

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Professor Greenline from BrightChamps

Important Glossaries for 2018 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, XVIII = X + V + III = 10 + 5 + 3 = 18.

 

  • Grouping Method: The given numbers are grouped based on their place value and then converted into Roman numerals. For example, 2018 = 2000 + 10 + 5 + 3 = MMXVIII.

 

  • Repetition Rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated up to three times. For example, III = 3 (I is repeated three times).

 

  • Subtraction Rule: The subtraction method is used when a smaller numeral precedes a larger numeral. For example, IV = 4 (5 - 1).

 

  • Limitation Rule: Symbols like V, L, and D cannot be repeated. Instead of VV for 10, we use X.
Professor Greenline from BrightChamps

About BrightChamps in Indonesia

At BrightChamps, numbers mean more than digits—they’re the gateway to countless opportunities! Our mission is to assist kids all across Indonesia in mastering vital math skills, focusing today on the 2018 in Roman Numerals with special attention to Roman numerals—in an engaging, enjoyable, and simple way. Whether your child is figuring out how fast a roller coaster moves through Dunia Fantasi, tracking scores at a local badminton game, or managing their allowance to buy the newest gadgets, mastering numbers empowers them to tackle everyday challenges with confidence. Our interactive lessons make learning both fun and easy. Since kids across Indonesia learn differently, we personalize our teaching to suit every child’s style. From Jakarta’s busy streets to Bali’s beautiful beaches, BrightChamps makes math relatable and exciting all over Indonesia. Let’s make Roman numerals an exciting part of every child’s math journey!
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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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