Last updated on May 26th, 2025
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 so on. Here we will be discussing Roman Numerals, rules, and examples.
Royal titles, such as Henry I, Henry II, and so on, often use Roman numerals. Have you noticed the names and wondered what these symbols (I and II) represented? Those are Roman Numerals.
Earlier, people used to count using fingers, sticks, bones, etc. 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 CDLXXVII to represent 477. Here, CD is 400, LXX is 70, and VII is 7. Let’s learn more about Roman numerals and how we write them.
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.
The addition method is used when the smaller number is placed after the larger number. For example, VII → V + I + I → 5 + 1 + 1 = 7.
To write larger numbers, certain Roman Numerals can be repeated up to three times. For example, XXX → 30.
If a small number precedes a large number in Roman Numerals, we subtract the smaller number from the large number. For example, IV → V - I → 5 - 1 = 4.
The symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we don't write VV for 10; instead, we use X.
Let’s now learn how to write 477 in Roman Numerals. Follow these methods to write the number in Roman Numerals:
In the expansion method, based on the place value, the number is broken down. In this section, we will learn how to write 477 in Roman numerals using the expansion method. To write 477 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc. For 477, we write it as 400 + 70 + 7.
Step 2: Converting the number into Roman Numerals: 400 in Roman Numerals - CD 70 in Roman Numerals - LXX 7 in Roman Numerals - VII
Step 3: Combine the Roman Numerals together. Therefore, 477 in Roman Numeral is CD (400) + LXX (70) + VII (7) = CDLXXVII.
When writing a large number into Roman Numerals, we group the number. To write 477 in Roman Numeral, we group 477 as 400 + 70 + 7.
So, 477 is written as CDLXXVII in Roman Numerals.
Students make mistakes when writing numbers in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and the ways to avoid them.
Convert the year CDLXXVII into a modern calendar year and determine how many years ago it was from 2023.
The year CDLXXVII is 477. It was 1546 years ago from 2023.
CDLXXVII is 477 in Roman numerals.
To find how many years ago it was, subtract 477 from 2023:
2023 - 477 = 1546.
Therefore, the year CDLXXVII was 1546 years ago from 2023.
A historian found a document marked with the year MCCCLXXVII. How many centuries and years have passed since CDLXXVII?
Since CDLXXVII, 900 years have passed, which is 9 centuries and 0 years.
First, convert both years from Roman numerals to numbers:
CDLXXVII is 477
MCCCLXXVII is 1377.
Calculate the difference:
1377 - 477 = 900.
900 years is equivalent to 9 centuries and 0 years.
A collector has CDLXXVII coins and decides to distribute them equally among XIII friends. How many coins does each friend receive?
Each friend receives XXXVII coins.
First, convert the numbers from Roman numerals to numbers:
CDLXXVII is 477
XIII is 13.
Divide 477 by 13:
477 / 13 = 37.
37 in Roman numerals is XXXVII.
If a manuscript dated CDXLVII has been preserved for 30 years, in what year was it discovered?
The manuscript was discovered in 1976.
First, convert the year from Roman numerals to numbers:
CDXLVII is 447.
If it has been preserved for 30 years, we subtract 30 from 2023:
2023 - 30 = 1993.
Therefore, the manuscript was discovered in 1993.
Calculate the sum of the Roman numerals CDLXXVII and CXXIII.
The sum of CDLXXVII and CXXIII is DC.
Convert the Roman numerals to numbers: CDLXXVII is 477 and CXXIII is 123. Add the numbers: 477 + 123 = 600. Convert 600 back to Roman numerals: DC.
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.
: She loves to read number jokes and games.