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Last updated on February 21st, 2025
Roman numerals are a way of expressing numbers using symbols. The symbols used are I, V, X, L, C, D, and M. Roman numerals are used in royal titles, book names, sequences, and more. In this article, we will discuss Roman numerals, the rules for writing them, and examples.
Royal titles such as Henry I, Henry II, and so on use Roman numerals. Have you noticed these symbols and wondered what they represent? Those are Roman numerals. In ancient times, people counted using fingers, sticks, bones, etc. When life became more complex, a standard form was required for counting, leading to the development of the Roman numeral system. The symbols used are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).
To represent 235 in Roman numerals, we use CCXXXV, where C is 100, X is 10, and V is 5. Let’s learn more about Roman numerals and how they are written.
There are certain basic rules for writing a number in Roman numerals. In this section, we will discuss some fundamental rules that should be remembered when writing numbers in Roman numerals.
Rule 1: Addition Method
The addition method is used when a smaller number is placed after a larger number. For example, in CCXXXV, C (100) is followed by C (100), then X (10) and another X (10) and finally V (5), so the addition method applies: 100 + 100 + 10 + 10 + 5 = 225.
Rule 2: Repetition Method
Certain Roman numerals can be repeated up to three times to increase their value. For example, XXX → 30.
Rule 3: Subtraction Method
If a smaller number precedes a larger number in Roman numerals, the smaller number is subtracted from the larger number. For example, IV → V I → 5 1 = 4.
Rule 4: Limitation Rule
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. Similarly, 8 is written as VIII, not IIIIIIII.
Let’s learn how to write 235 in Roman numerals using different methods.
In the expansion method, the number is broken down based on place value. Below are the steps to write 235 in Roman numerals using this method:
Step 1: Break the number based on place value: 200 + 30 + 5
Step 2: Convert each part to Roman numerals:
200 in Roman numerals is CC
30 in Roman numerals is XXX
5 in Roman numerals is V
Step 3: Combine the Roman numerals: CC + XXX + V = CCXXXV
When writing a large number in Roman numerals, we can group the numbers. For 235, we group it as 200 + 30 + 5:
200 in Roman numerals is CC
30 in Roman numerals is XXX
5 in Roman numerals is V
Therefore, 235 in Roman numerals is written as CCXXXV.
A historian is organizing a collection of CCXXXV ancient coins into V bags equally. How many coins will each bag contain?
A librarian has collected CCXXXV rare manuscripts, and she wants to create a special exhibit by grouping them into XV displays. How many manuscripts will each display feature?
Calculate the sum of CXC and XLV.
What is the difference between CCXL and V?
Write the Roman Numeral for 150 + 85 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.