BrightChamps Logo
Login
Creative Math Ideas Image
Live Math Learners Count Icon102 Learners

Last updated on May 26th, 2025

Math Whiteboard Illustration

820 in Roman Numerals

Professor Greenline Explaining Math Concepts

Roman numerals are a 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 more. Here we will be discussing Roman Numerals, rules, and examples.

820 in Roman Numerals for Filipino Students
Professor Greenline from BrightChamps

What is 820 in Roman Numerals?

The royal titles, such as Henry I, Henry II, and so on, use Roman Numerals. Have you noticed these symbols (I and II) and wondered what they represent? Those are Roman Numerals. In ancient times, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was needed, so the ancient Romans developed the Roman Numeral system. We use I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) as symbols to count.

 

In Roman Numerals, we use DCCCXX to represent 820, where D is 500, CCC is 300, and XX is 20. Let’s learn more about Roman numerals and how we write them.

820 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 820 in Roman Numerals

Certain basic rules apply when writing a number in Roman Numerals. Let's discuss some rules that are important to remember:

 

Rule 1: Addition Method

The addition method is used when the smaller number is placed after the larger number. For example, DCCCXX → D + CCC + XX → 500 + 300 + 20 = 820

 

Rule 2: Repetition Method

Certain Roman Numerals can be repeated up to three times. For instance, III → 3.

 

Rule 3: Subtraction Method

If a smaller number precedes a larger number, you subtract the smaller from the larger. For example, IX → X - I → 10 - 1 = 9

 

Rule 4: Limitation Rule

Symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we write 10 as X, not VV, and 8 as VIII, not IIIIIIII.

Professor Greenline from BrightChamps

How to Write 820 in Roman Numerals

Let’s learn how to write 820 in Roman Numerals using different methods.

 

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

820 in Roman Numerals by Expansion Method

In the expansion method, based on place value, the number is broken down. Here's how to write 820 in Roman numerals using this method:

 

Step 1: Break the number based on place value: hundreds, tens, ones. For 820, it's 800 + 20.

 

Step 2: Convert these numbers into Roman Numerals: 

  • 800 = DCCC (500 + 300) 
     
  • 20 = XX

 

Step 3: Combine them: DCCC + XX = DCCCXX.

Professor Greenline from BrightChamps

820 in Roman Numerals by Grouping Method

When writing large numbers into Roman Numerals, we group the numbers. To write 820 in Roman Numerals, group 820 as 800 + 20.

 

  • 800 in Roman Numerals - DCCC
     
  • 20 in Roman Numerals - XX

 

Therefore, 820 is written as DCCCXX in Roman Numerals.

Max Pointing Out Common Math Mistakes

Common Mistakes and How to Avoid Them in 820 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

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Errors in repetition method

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

The repetition method can be confusing as it states that Roman Numerals cannot be repeated more than three times. Also, some Roman Numerals, such as V, L, and D, cannot be repeated.

Ray Thinking Deeply About Math Problems

FAQs on 820 in Roman Numerals

1.What is 800 in Roman numerals?

Math FAQ Answers Dropdown Arrow

2.How to write 820 in Roman numerals?

Math FAQ Answers Dropdown Arrow

3.What is 850 in Roman Numerals?

Math FAQ Answers Dropdown Arrow

4.Is DCCCXX a prime number?

Math FAQ Answers Dropdown Arrow

5.What are the multiples of 820?

Math FAQ Answers Dropdown Arrow

6.How can children in Philippines use numbers in everyday life to understand 820 in Roman Numerals?

Math FAQ Answers Dropdown Arrow

7.What are some fun ways kids in Philippines can practice 820 in Roman Numerals with numbers?

Math FAQ Answers Dropdown Arrow

8.What role do numbers and 820 in Roman Numerals play in helping children in Philippines develop problem-solving skills?

Math FAQ Answers Dropdown Arrow

9.How can families in Philippines create number-rich environments to improve 820 in Roman Numerals skills?

Math FAQ Answers Dropdown Arrow
Professor Greenline from BrightChamps

Important Glossaries for 820 in Roman Numerals

  • Addition rule: Applies when a large numeral is followed by a smaller numeral, resulting in addition. For example, DCCCXX = D + CCC + XX = 500 + 300 + 20 = 820.

 

  • Grouping method: Numbers are grouped based on place value and converted to Roman numerals. For example, 820 = 800 + 20 = DCCCXX.

 

  • Repetition rule: Certain symbols (I, X, C, M) can be repeated up to three times. For example, CCC = 300.

 

  • Subtraction method: A smaller numeral before a larger one indicates subtraction. For example, IX = X - I = 9.

 

  • Limitation rule: Symbols like V, L, and D cannot be repeated. For example, 10 is X, not VV.
Professor Greenline from BrightChamps

About BrightChamps in Philippines

At BrightChamps, numbers are more than just digits—they are keys to limitless possibilities! Our goal is to help children throughout the Philippines develop crucial math skills, focusing today on the 820 in Roman Numerals with a special focus on Roman numerals—in a lively, fun, and easy-to-follow way. Whether your child is calculating the speed of a roller coaster at Enchanted Kingdom, keeping track of scores at a basketball game, or managing their allowance to buy the newest gadgets, mastering numbers builds confidence for daily life. Our interactive lessons make learning fun and easy. Since kids in the Philippines learn in diverse ways, we tailor our approach to fit each child’s unique style. From the bustling streets of Manila to the beautiful islands of Palawan, BrightChamps brings math to life, making it relatable and exciting throughout the Philippines. Let’s make Roman numerals a fun part of every child’s learning journey!
Math Teacher Background Image
Math Teacher Image

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.

Math Teacher Fun Facts Image
Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

INDONESIA - Axa Tower 45th floor, JL prof. Dr Satrio Kav. 18, Kel. Karet Kuningan, Kec. Setiabudi, Kota Adm. Jakarta Selatan, Prov. DKI Jakarta
INDIA - H.No. 8-2-699/1, SyNo. 346, Rd No. 12, Banjara Hills, Hyderabad, Telangana - 500034
SINGAPORE - 60 Paya Lebar Road #05-16, Paya Lebar Square, Singapore (409051)
USA - 251, Little Falls Drive, Wilmington, Delaware 19808
VIETNAM (Office 1) - Hung Vuong Building, 670 Ba Thang Hai, ward 14, district 10, Ho Chi Minh City
VIETNAM (Office 2) - 143 Nguyễn Thị Thập, Khu đô thị Him Lam, Quận 7, Thành phố Hồ Chí Minh 700000, Vietnam
Dubai - BrightChamps, 8W building 5th Floor, DAFZ, Dubai, United Arab Emirates
UK - Ground floor, Redwood House, Brotherswood Court, Almondsbury Business Park, Bristol, BS32 4QW, United Kingdom