How To Write 18 In Roman Numerals

18 in Roman numerals is XVIII. To convert 18 in Roman Numerals, we will write 18 in the expanded form, i.e. 18 = 10 + (5+3) thereafter replacing the transformed numbers with their respective roman numerals, we get 19 = X + (V +III) = XVIII. Roman numerals are a system of numerical notation used in ancient rome.

Even though it may not be widely used today, knowing how to write roman numerals can be useful for various purposes, such as for clock faces, book chapters, and on monuments. Roman numerals consist of seven letters: i, v, x, l, c, d, and m.

these letters represent 1, 5, 10, 50, 100, 500, and 1,000 respectively. By combining these letters, different numbers can be represented. Writing 18 in roman numerals is a simple example of how these numerals work.

Understanding Roman Numeral System

Roman numerals are a numeric system originating in ancient rome. In the roman numeral system, symbols are used to denote numeric values. The symbols i, v, x, l, c, d, and m represent the numbers 1, 5, 10, 50, 100, 500, and 1000, respectively.

Learning how to write roman numerals is an essential skill that can come in handy.

Basic Principles Of Roman Numerals

Roman numerals are made up of a combination of letters that represent numeric values. To write numbers using roman numerals, the following basic principles should be noted:

  • Only certain letters are used to represent values.
  • Letters are combined to form larger values.
  • In a numeral, if a letter is smaller than the one that follows it, subtract the first letter’s value from the second letter’s value to represent a number.
  • The symbols i, x, and c can be repeated up to three times in a row. When a symbol is repeated, its values are added.
  • The symbols v, l, and d are never repeated.

The Role Of Symbols And Value

To understand roman numerals, it is essential to know the role of symbols and their values. The symbols used in roman numerals represent numeric values. Letters are combined to form larger numbers, and the value of the number depends on the combination of letters used.

Here’s a quick rundown of the symbols and their values:

  • I represents the value 1
  • V represents the value 5
  • X represents the value 10
  • L represents the value 50
  • C represents the value 100
  • D represents the value 500
  • M represents the value 1000

Understanding Decimal And Non-Decimal Roman Numerals

The roman numeral system is a non-decimal system. Unlike the decimal system, which uses ten numerals (0-9), the roman numeral system only uses seven letters. However, decimal numbers can be expressed using roman numerals. For example, the number 18 can be expressed as xviii in roman numerals.

Non-decimal roman numerals are used for special purposes, such as naming monarchs, books, paragraphs, and sections in legal documents and numbering music chords. In non-decimal roman numerals, letters are used in multiple ways, and the meaning of the letters depends on their placement.

Understanding the roman numeral system is essential if you want to read and write roman numerals. The system’s basic principles, the role of symbols and their values, and the difference between decimal and non-decimal roman numerals can help you become proficient in this timeless numeric system.

Step 1: Understanding The Value Of Symbols

Roman numerals have been used for many centuries to represent numbers. Understanding the value of symbols is an essential step towards mastering the skill of writing in roman numerals. In this blog post, we will focus on how to write 18 in roman numerals, starting with the fundamental step of understanding the value of symbols.

The Symbol For 10 And 1

Roman numerals are made up of seven different symbols that represent different values. The two symbols that we will need to write 18 are x, which represents 10, and i, which represents 1. These symbols can be combined in different ways to represent different values, as we will see in the following section.

How To Combine Symbols To Represent Values

To write 18 in roman numerals, we need to combine the symbols x and i in a way that represents this value. One way to do this is by placing the symbol for 10 (x) before the symbol for 1 (i) which gives us the combination of symbols, ‘xviii’.

This combination reads as ten (x) plus five (v) plus one (i) plus one (i) plus one (i), which equals 18.

Practice Exercises

To reinforce your understanding of roman numerals, here are some practice exercises to try:

  • Write 23 in roman numerals
  • Answer: Xxiii (10 + 10 + 1 + 1 + 1)
  • Write 99 in roman numerals
  • Answer: Xcix (100 – 10 + 1 + 10)
  • Write 76 in roman numerals
  • Answer: Lxxvi (50 + 10 + 10 + 5 + 1)

By following these three simple steps of understanding the value of symbols, knowing how to combine symbols to represent values, and practicing with exercises, you will be able to confidently write any number in roman numerals.

Step 2: Writing 18 In Integer Form

18 is a number that can be represented in various formats. In this blog post, we will focus on converting 18 into roman numerals. Here’s how you can write 18 in roman numerals by following the two easy steps below.

Understanding How The Decimal System Works

Before we dive into writing 18 in roman numerals, it’s essential to understand the decimal system and its importance in roman numerals. The decimal system is an essential aspect of roman numerals, as it uses different letters to represent various values.

Here are the key points to keep in mind:

  • Roman numerals are represented by seven different letters: I, v, x, l, c, d, and m.
  • Each letter represents a specific value, for example, i represents 1; v represents 5, and x represents 10.
  • When a letter of lower value appears before a higher-valued letter, its value is subtracted; otherwise, it’s added.

Converting 18 To Roman Numerals

To write 18 in roman numerals, follow these steps:

Step 1: find the highest roman numeral that is less than 18. In this case, it’s x (which represents 10).

Step 2: writing 18 in integer form. Subtract x from 18, which equals 8. Hence, the roman numeral for 18 is xviii.

Practice Exercises

Here are a few practice exercises to help you understand how to write 18 in roman numerals:

  • Write 14 in roman numerals.

Answer: xiv. Here, we find the highest roman numeral that is less than 14, which is x (which represents 10). We then subtract x from 14, which equals 4, and add i and v (which represent 1 and 5, respectively) after x.

  • Write 29 in roman numerals.

Answer: xxix. Here, we find the highest roman numeral that is less than 29, which is xx (which represents 20). We then subtract xx from 29, which equals 9, and add i and x after xx.

Converting numbers into roman numerals may seem challenging at first, but once you understand the process, it’s relatively simple. By following the steps mentioned above, you can easily write different numbers in roman numerals.

Step 3: Writing 18 In Non-Integer Form

The Role Of Subtraction In Non-Decimal Roman Numerals

When it comes to non-decimal roman numerals, subtraction is a critical component. To write numbers in non-decimal roman numerals, we need to express them as the sum of different powers of ten. Here, subtraction comes into play to create numbers that are not typical multiples of ten.

The roman numeral for ten is x, and five is v, so to write four, we would combine iv instead of iiii. Similarly, to express 9, we write ix and not viiii. These subtraction rules make it possible to read and write non-decimal roman numerals, and it’s essential to understand them while writing 18.

How To Write 18 Using Non-Decimal Roman Numerals

To write 18 using non-decimal roman numerals, we can use a combination of x, v, and i. Let’s take a look at how we can use the subtraction rule to get 18:

  • Start with 10 and 5, which is xv.
  • To add eight more, we use the subtraction method by writing xviii.
  • And voila! We have successfully written 18 in non-decimal roman numerals.

Practice Exercises

To master the skill of writing non-decimal roman numerals, it’s essential to practice. Here are some exercises to help you sharpen your skills:

  • Write 24 using non-decimal roman numerals
  • Convert 16 to non-decimal roman numerals
  • Write 29 in non-decimal roman numerals

By practicing writing non-decimal roman numerals, you’ll become more confident in your skills and be able to write numbers accurately using this ancient method.

Tips And Tricks For Writing Roman Numerals Like A Pro

Are you struggling to write 18 in roman numerals? Don’t worry, you’re not alone! Roman numerals have been used since ancient times, and they can be tricky to understand for those who are not familiar with them. In this blog post, we will explore some helpful tips and tricks that will make it easier for you to write roman numerals like a pro, with a focus on writing 18.

Common Errors To Avoid

When writing roman numerals, there are some common errors that people tend to make. Here are a few of them:

  • Not using the correct symbols: Roman numerals use a variety of symbols, such as i, v, x, l, c, d, and m. make sure that you are using the correct symbol for the number you are trying to write.
  • Misunderstanding the value of symbols: Roman numerals follow a pattern, where the value of each symbol is based on its position. Make sure that you understand the value of each symbol in the system.
  • Confusing ‘4’ and ‘9’: In roman numerals, the number 4 is represented by iv, while the number 9 is represented by ix. These symbols can be easy to mix up, so make sure that you are using the correct one.

Tips For Remembering Key Symbols

One of the best ways to write roman numerals like a pro is to memorize the key symbols. Here are some tips that will help you remember them:

  • Write them down: The act of writing out the symbols can help you commit them to memory.
  • Create associations: Associate each symbol with something else that is familiar to you. For example, you could remember that ‘v’ looks like a ‘v’ for ‘5’.
  • Practice: The more you practice writing roman numerals, the easier it will become. You can find online resources that offer exercises for practice.

How To Read And Write Larger Roman Numerals

Now that you have a good understanding of the basics, let’s take a look at how to write 18 in roman numerals. The number 18 is written as xviii. Here’s how it breaks down:

  • X represents 10
  • V represents 5
  • Iii represents 3 (remember that 18 is composed of 10 + 5 + 3)

When writing larger roman numerals, the same principles apply. Here are a few additional tips:

  • Break the number down: It can be helpful to break down the number into smaller chunks and then add them together. For example, to write 500 in roman numerals, you would write d (500) as 400 + 100, which would be cd + c.
  • Use parentheses: When a symbol appears after a larger symbol, its value is added to the value of the larger symbol. For example, (v)i would represent 6, because v (5) is written before i (1).

Writing roman numerals like a pro takes practice, but with these tips and tricks, you’ll be well on your way to mastering this ancient numerical system. Remember to avoid common errors, memorize the key symbols, and break down larger numbers into smaller chunks.

Happy writing!

Roman numerals from 1 to 100 || Learn Roman number 1 to 100

Frequently Asked Questions

What Is The Roman Numeral For 18?

The roman numeral for 18 is xviii in its modern form.

How Do I Convert Numbers To Roman Numerals?

To convert numbers to roman numerals, use a conversion chart that matches each number with its corresponding roman numeral.

What Is The Origin Of Roman Numerals?

Roman numerals originated in ancient rome and were used extensively in the roman empire for counting, trading, and legal purposes.

What are the roman numerals 1 to 20?

Roman numerals from 1 to 20 are 1 = I, 2 = II, 3 = III, 4 = IV, 5 = V, 6 = VI, 7 = VII, 8 = VIII, 9 = IX, 10 = X, 11 = XI, 12 = XII, 13 = XIII, 14 = XIV, 15 = XV, 16 = XVI, 17 = XVII, 18 = XVIII, 19 = XIX, 20 = XX.

What is the numeral of 19?

19 in Roman numerals is XIX.

How do you write 20 in roman numerals?

Therefore, 20 in roman numerals is written as 20 = XX.


Writing the number 18 in roman numerals may seem intimidating at first, but it is actually quite simple once you understand the basic rules. Remember to break the number down into its component parts (10 and 8), and then use the appropriate symbols to add them together.

Whether you need to write out a birth year, a significant date, or simply want to impress your friends with your knowledge of ancient writing systems, knowing how to write roman numerals is a valuable skill to have. Plus, mastering this skill can also help you understand the origins of modern numerical systems and appreciate the rich history of mathematics and language.

So, next time you need to write the number 18 in roman numerals, take a deep breath, refer back to these rules, and show the world what you’ve got.

Read Also : How To Write A Capital T In Cursive

Reduanul hasan

I specialize in SEO and blogging. I have worked as an SEO expert for 10 years and have experience with a variety of tools and techniques. I am also a skilled blogger and have been writing for 5 years. I have a strong understanding of how to optimize blog posts for search engines and how to drive traffic to a blog. I am passionate about helping businesses grow their online presence and reach their target audience.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Check Also
Back to top button