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Last updated on February 24th, 2025
Roman numerals are a way of expressing numbers using symbols. The symbols used in Roman numerals are I, V, X, L, C, D, and M. 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 I, Henry II, and so on, use Roman numerals. Have you ever noticed these symbols and wondered what they represent? Those are the Roman numerals. In ancient times, people used fingers, sticks, bones, etc., to count.
As life became more 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 used in Roman numerals.
In Roman numerals, we use CCCLXXV to represent 375. Here, CCC is 300, L is 50, XX is 20, and V is 5. 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.
Rule 1: Addition Method
The addition method is used when the smaller number is placed after the larger number. For example, CCCLXXV → CCC (300) + L (50) + XX (20) + V (5) = 375.
Rule 2: Repetition Method
To write a large number, certain Roman numerals can be repeated up to three times. For example, CCC → 300 (C repeated three times).
Rule 3: Subtraction Method
If a smaller number is followed by a larger number in Roman numerals, we subtract the smaller number from the larger number. For example, XC → C - X → 100 - 10 = 90.
Rule 4: Limitation Rule
The symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we don't write VV for 10; instead, we use X, and for 90, we write XC, not LXXXX.
Let’s now learn how to write 375 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. To write 375 in Roman numerals, follow these steps:
Step 1: Break down the number based on place value: hundreds, tens, and ones.
375 = 300 + 70 + 5
Step 2: Convert each part into Roman numerals:
300 in Roman numerals - CCC
70 in Roman numerals - LXX
5 in Roman numerals - V
Step 3: Combine the Roman numerals together:
Therefore, 375 in Roman numerals is CCC (300) + LXX (70) + V (5) = CCCLXXV.
When writing a number in Roman numerals, we can group the number. To write 375 in Roman numerals, we group it as 300 + 70 + 5.
So, 375 is written as CCCLXXV in Roman numerals.
A historian is deciphering an ancient text and finds a reference to DCLXXV laborers who worked for XV hours. Calculate the total number of labor hours worked.
A museum is cataloging a collection of MMCCL ancient coins, which are to be distributed equally into LXXV display cases. Determine the number of coins per display case.
Calculate the sum of CDL and CCCXXV.
Find the difference between DCCC and CDXXV.
Write the Roman Numeral for 375 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.