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 MCD to represent 1400, where M is 1000, C is 100, and D is 500.
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; then it is the addition method. 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 smaller number precedes a larger number in Roman Numerals, we subtract the smaller number from the larger number, which is the subtraction method. 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 LL for 100 instead we use C, and 8 is written as VIII, not IIIIIIII.
Let’s now learn how to write 1400 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 1400 in Roman numerals using the expansion method. To write 1400 in Roman Numerals, follow the steps,
Step 1: The number is broken down based on the place value, which is ones, tens, hundreds, etc. For 1400, we write it as 1000 + 400
Step 2: Converting the number into Roman Numerals
Step 3: Combine the Roman Numerals together. Therefore, 1400 in Roman Numerals is M (1000) + CD (400) = MCD
When writing a large number into Roman Numerals, we group the number. To write 1400 in Roman Numerals, we group 1400 as 1000 + 400
So, 1400 is written as MCD 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 is cataloging artifacts and finds a collection of artifacts labeled DCC and DCC. Calculate the total Roman numeral value of the collection and convert it to standard numbers.
The total Roman numeral value of the collection is MCD.
DCC is 700, and another DCC is also 700. The sum of the two is 700 + 700 = 1400. 1400 in Roman numerals is MCD.
A library has a budget to purchase MCD books and plans to distribute them equally across C libraries. How many books will each library receive?
Each library will receive XIV books.
MCD is 1400 and C is 100. Dividing 1400 by 100 gives 14. 14 in Roman numerals is XIV.
A researcher is analyzing ancient texts and finds a series of numbers: DCC, CD, and DC. What is their total sum in Roman numerals?
The total sum of DCC, CD, and DC is MCD.
DCC = 700, CD = 400, and DC = 600. Adding these gives 700 + 400 + 600 = 1700. The closest lower Roman numeral is M (1000), and the remaining 700 is DCC. Thus, the total is MCD.
Calculate the difference between MD and MCD using Roman numerals.
The difference between MD and MCD is C.
MD is 1500 and MCD is 1400. Subtracting 1400 from 1500 gives 100. 100 in Roman numerals is C.
Rewrite the expression 900 + 500 using Roman numerals and provide the answer using the expansion method.
The Roman numeral for 900 + 500 is MCD.
First, convert the numbers 900 and 500 into Roman numerals: 900 - CM 500 - D Add the numbers together: 900 + 500 = 1400 Using the expansion method, 1400 is 1000 + 400 = MCD.
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.