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.
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 DCLXIII to represent 663, where D is 500, C is 100, LX is 60, and III is 3. 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, LXIII → L + X + I + I + I → 50 + 10 + 3 = 63.
To write a large number, there are certain Roman Numerals that can be repeated up to three times. III → 3.
If a smaller number precedes a larger number in Roman Numerals, we subtract the smaller number from the larger 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, and 8 we write as VIII, not IIIIIIII.
Let’s now learn how to write 663 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 663 in Roman numerals using the expansion method. To write 663 in Roman Numerals, follow the steps,
Step 1: Break the number based on place value, such as hundreds, tens, ones, etc. For 663, we write it as 600 + 60 + 3.
Step 2: Convert the numbers into Roman Numerals. 600 in Roman Numeral - DC 60 in Roman Numeral - LX 3 in Roman Numeral - III
Step 3: Combine the Roman Numerals together. Therefore, 663 in Roman Numeral is DC (600) + LX (60) + III (3) = DCLXIII
When writing a large number into Roman Numeral, we group the numbers. To write 663 in Roman Numeral, we group 663 as 600 + 60 + 3.
So, 663 is written as DCLXIII in 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.
Calculate the quotient of DCCLXIII divided by IX.
The quotient of DCCLXIII divided by IX is LXXIII.
DCCLXIII is 763 and IX is 9 in Roman numerals.
The division 763 ÷ 9 equals 73.
Therefore, 73 in Roman numerals is LXXIII.
A historian finds a collection of DCLXIII ancient coins divided equally among VII treasure chests. How many coins are in each chest?
Each chest contains XCIV coins.
To find the number of coins per chest, divide DCLXIII by VII.
DCLXIII = 663
VII = 7
663 ÷ 7 = 94
94 in Roman numerals is XCIV.
Find the sum of CCCXXXI and CCCXXXII.
The sum of CCCXXXI and CCCXXXII is DCLXIII.
Sum is the result of adding two numbers.
CCCXXXI = 331
CCCXXXII = 332
331 + 332 = 663
663 in Roman numerals is DCLXIII.
The sum of CCCXXXI and CCCXXXII is DCLXIII.
A mathematician subtracts CCC from DCCLXIII. What is the result?
The result of subtracting CCC from DCCLXIII is CCCLXIII.
Subtracting two numbers means finding the difference.
DCCLXIII = 763
CCC = 300
763 - 300 = 463
463 in Roman numerals is CCCLXIII.
Write the Roman Numeral for 663 using the expansion method.
The Roman numeral for 663 is DCLXIII.
Step 1: Break down 663 into hundreds, tens, and ones.
600 + 60 + 3 = 663
600 in Roman numerals is DC.
60 in Roman numerals is LX.
3 in Roman numerals is III.
Combine them:
DC + LX + III = DCLXIII.
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.