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Last updated on February 25th, 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 more. Here we will be discussing Roman Numerals, rules, and examples.
Roman Numerals are used in various contexts, such as royal titles (e.g., Henry I, Henry II), book names, and more. Have you noticed these names and wondered what these symbols (I and II) represent? Those are Roman Numerals.
Initially, people used fingers, sticks, bones, etc., to count. As life became complex, a standard form was needed. 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.
In Roman Numerals, we use DCXXIV to represent 624, where D is 500, C is 100, X is 10, 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 the smaller number is placed after the larger number. For example, VI → V + I → 5 + 1 = 6.
To write a large number, certain Roman Numerals can be repeated up to three times. III → 3.
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number. For example, IX → X - I → 10 - 1 = 9.
The symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, 10 is written as X, not VV, and 8 is VIII, not IIIIIIII.
Let’s now learn how to write 624 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 624 in Roman numerals using the expansion method. To write 624 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc. For 624, we write it as 500 + 100 + 20 + 4.
Step 2: Converting the number into Roman Numerals:
500 in Roman Numerals - D
100 in Roman Numerals - C
20 in Roman Numerals - XX
4 in Roman Numerals - IV
Step 3: Combine the Roman Numerals together. Therefore, 624 in Roman Numerals is D (500) + C (100) + XX (20) + IV (4) = DCXXIV.
When writing a large number in Roman Numerals, we group the number. To write 624 in Roman Numerals, we group 624 as 500 + 100 + 20 + 4.
So, 624 is written as DCXXIV in Roman Numerals.
Calculate the sum of CDXCIV and CXXX.
A historian is cataloging artifacts and has DCCCXVI items to distribute evenly into a set of XXV categories. How many items will each category receive?
A museum has acquired CDXXXIV new exhibits and plans to add them to its existing collection of CLXXXX items. What is the new total number of exhibits?
What is the product of XXIV and XXVI in Roman numerals?
Express the difference between DCCXIV and XC in Roman numerals.
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.