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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 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.
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.
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?
A researcher is analyzing ancient texts and finds a series of numbers: DCC, CD, and DC. What is their total sum in Roman numerals?
Calculate the difference between MD and MCD using Roman numerals.
Rewrite the expression 900 + 500 using Roman numerals and provide the answer using the expansion method.
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.