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Last updated on February 24th, 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. to count earlier. 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 DCCXLII to represent 742, where D is 500, CC is 200, XL is 40, and II is 2.
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, there are certain Roman Numerals that can be repeated up to three times. For example, CCC → 300.
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number. For example, XL → L - X → 50 - 10 = 40
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 DD for 1000; instead, we use M and 8 we write as VIII not IIIIIIII.
Let’s now learn how to write 742 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 742 in Roman numerals using the expansion method. To write 742 in Roman Numerals, follow the steps,
Step 1: Break the number based on place value: hundreds, tens, and ones. For 742, write it as 700 + 40 + 2
Step 2: Converting the number into Roman Numerals
Step 3: Combine the Roman Numerals together. Therefore, 742 in Roman Numerals is DCC (700) + XL (40) + II (2) = DCCXLII
When writing a large number in Roman Numerals, we group the number. To write 742 in Roman Numerals, we group 742 as 700 + 40 + 2.
So, 742 is written as DCCXLII in Roman Numerals.
Multiply DCCXLII by II.
A library has MCDLXXXIV books and wants to distribute them equally among DCCXLII readers. How many books will each reader receive?
Add DCCXLII and CCCXLVIII.
What is the difference between MCDLXXXIV and DCCXLII?
Write the Roman Numeral for 742 + 258 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.