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. 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 DCCXXIV to represent 724. Here, D is 500, CC is 200, XX is 20, and IV is 4. 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 a smaller number is placed after a larger number. For example, XX → X + X → 10 + 10 = 20.
To write a large number, certain Roman Numerals can be repeated up to three times. For example, CCC → 300.
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 won't write VV for 10 instead we use X, and 8 we write as VIII not IIIIIIII.
Let’s now learn how to write 724 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 724 in Roman numerals using the expansion method.
To write 724 in Roman Numerals, follow these steps:
Step 1: Break the number based on the place value. Place value that is ones, tens, hundreds, etc.
For 724, we write it as 700 + 20 + 4.
Step 2: Converting the numbers into Roman Numerals:
700 in Roman Numerals — DCC
20 in Roman Numerals — XX
4 in Roman Numerals — IV
Step 3: Combine the Roman Numerals together.
Therefore, 724 in Roman Numerals is DCC (700) + XX (20) + IV (4) = DCCXXIV.
When writing a large number into Roman Numerals, we group the numbers.
To write 724 in Roman Numerals, we group 724 as 700 + 20 + 4:
700 in Roman Numerals — DCC
20 in Roman Numerals — XX
4 in Roman Numerals — IV
So, 724 is written as DCCXXIV 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.
A historian discovers two ancient scrolls, one marked with the numeral CDXLIV and the other with CCLXXIII. What is the total value of the scrolls in Roman numerals?
The total value of the scrolls is DCCXVII
CDXLIV = 444
CCLXXIII = 273
444 + 273 = 717
717 in Roman Numerals is DCCXVII.
An art collector has DCCC paintings and wants to distribute them equally among L painters. How many paintings will each painter receive?
Each painter will receive XVI paintings.
DCCC = 800
L = 50
800 / 50 = 16
16 in Roman numerals is XVI.
A museum receives two donations: one of CCCXLIV artifacts and the other of CCXC artifacts. What is the total number of artifacts in Roman numerals?
The total number of artifacts is DCXXXIV.
CCCXLIV = 344
CCXC = 290
344 + 290 = 634
634 in Roman Numerals is DCXXXIV.
In a reenactment of a Roman battle, LXXXV soldiers face off against CL. What is the difference in the number of soldiers between the two sides?
The difference in the number of soldiers is LXV.
CL = 150
LXXXV = 85
150 - 85 = 65
65 in Roman Numerals is LXV.
A mathematician wants to express the sum of 350 and 374 using Roman numerals by breaking down the numbers. What is the result?
The result is DCCXXIV.
Step 1: Convert the numbers 350 and 374 into Roman numerals.
350 - CCCL
374 - CCCLXXIV
Add the numbers together: 350 + 374 = 724
Using the expansion method: 724 = 700 + 20 + 4 = DCCXXIV
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.