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 III or Henry IV, use Roman Numerals. Have you noticed these symbols (III and IV) and wondered what they represented? Those are Roman Numerals. Before standardized numeral systems, people used fingers, sticks, and other objects for counting.
To address the need for a standard, the Ancient Romans developed the Roman Numeral system. The symbols are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). In Roman Numerals, we use DCCXXXIX to represent 739; here, D is 500, CC is 200, XXX is 30, and IX is 9.
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, DCCXXXIX → D + CC + XXX + IX → 500 + 200 + 30 + 9 = 739.
Certain Roman Numerals can be repeated up to three times to form numbers. For example, XXX → 30.
If a smaller number precedes a larger number, it is subtracted. For example, IX → X - I → 10 - 1 = 9.
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 VVV for 15; instead, we use XV.
Let’s now learn how to write 739 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 739 in Roman numerals using the expansion method. To write 739 in Roman Numerals, follow these steps:
Step 1: Break the number based on place value. Place values include ones, tens, hundreds, etc. For 739, we write it as 700 + 30 + 9.
Step 2: Convert the numbers into Roman Numerals.
Step 3: Combine the Roman Numerals together. Therefore, 739 in Roman Numerals is DCC (700) + XXX (30) + IX (9) = DCCXXXIX.
When writing a large number in Roman Numerals, we group the numbers. To write 739 in Roman Numerals, we group 739 as 700 + 30 + 9.
So, 739 is written as DCCXXXIX in Roman Numerals.
Students make mistakes when writing numbers in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and ways to avoid them.
Calculate the product of DCCXXXIX and II.
The product of DCCXXXIX and II is MCDLXXVIII.
In numbers, DCCXXXIX is 739 and II is 2.
The product of DCCXXXIX and II is 739 × 2 = 1478.
1478 in Roman Numerals can be written as MCDLXXVIII.
A librarian has MDCCCXLVIII books and wants to distribute them equally among DCCXXXIX shelves. How many books will each shelf contain?
Each shelf will contain II books.
To find the number of books each shelf gets, divide the total number of books by the total number of shelves. That is MDCCCXLVIII / DCCXXXIX. MDCCCXLVIII = 1848 and DCCXXXIX = 739. Therefore, 1848 / 739 = 2. 2 in Roman numerals can be written as II.
Find the sum of CCCXCIX and DCCXXXIX.
The sum of CCCXCIX and DCCXXXIX is MCXXXVIII.
Sum is the result of adding two numbers. CCCXCIX = 399 and DCCXXXIX = 739. 399 + 739 = 1138.
1138 in Roman Numerals is MCXXXVIII.
The sum of CCCXCIX and DCCXXXIX is MCXXXVIII.
What is the difference between DCCXL and DCCXXXIX?
The difference between DCCXL and DCCXXXIX is I.
The difference of two numbers is the value we get when subtracting one number from the other. DCCXL = 740 and DCCXXXIX = 739. 740 - 739 = 1. 1 in Roman Numerals can be written as I.
Write the Roman Numeral for 739 + 261 using the expansion method.
The Roman numeral for 739 + 261 is M.
Step 1: First convert the numbers 739 and 261 into Roman numerals. 739 is DCCXXXIX and 261 is CCLXI. Add the numbers together: 739 + 261 = 1000. Using the expansion method: 1000 = M.
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.