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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 used. Roman Numerals are often found in royal titles, book names, sequences, and more. Here we will discuss Roman Numerals, their 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 Roman Numerals.
Ancient people used fingers, sticks, and bones for counting. As life became more complex, a standardized system was needed. The Ancient Romans developed the Roman Numeral system. The symbols used are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).
In Roman Numerals, 633 is written as DCXXXIII. Here, D is 500, C is 100, and XXXIII represents 30 + 3. Let’s learn more about how to write numbers as Roman numerals.
There are certain basic rules to write a number in Roman Numerals. Let's discuss some basic rules to remember when writing numbers in Roman numerals.
The addition method is used when a smaller number is placed after a larger number, indicating addition. For example, XXX → X + X + X = 10 + 10 + 10 = 30
To write larger numbers, certain Roman Numerals can be repeated up to three times. III → 3.
If a smaller number precedes a larger number, it indicates subtraction. For example, IX → X - I = 10 - 1 = 9
Symbols cannot be repeated more than three times, and symbols like V, L, and D cannot be repeated. For example, 10 is written as X, not VV, and 8 is written as VIII, not IIIIIIII.
Let’s learn how to write 633 in Roman Numerals using different methods:
In the expansion method, numbers are broken down based on their place value. Here is how to write 633 in Roman numerals using the expansion method:
Step 1: Break down the number by place value: 600 + 30 + 3
Step 2: Convert each part into Roman Numerals:
600 in Roman Numerals: DC (D = 500, C = 100)
30 in Roman Numerals: XXX (X = 10)
3 in Roman Numerals: III (I = 1)
Step 3: Combine them: DC + XXX + III = DCXXXIII
When writing larger numbers in Roman Numerals, group the number for clarity: To write 633, group it as 600 + 30 + 3.
So, 633 is written as DCXXXIII.
A historian is cataloging ancient artifacts and comes across a collection labeled DC and another labeled XXXIII. What is the total number of artifacts in both collections combined?
A library has a total of DCCLXVI books and decides to distribute them evenly among LII shelves. How many books will each shelf contain?
A collector has MMCCCXIV coins, and he gives away MDCLXXXI coins. How many coins does he have remaining?
A mathematician is solving a puzzle involving two numbers: CCCXVI and CCCXVII. What is the sum of these two numbers?
A museum exhibit lists artifacts as CDXXXIX and another set as CXCIV. What is the total number of artifacts when both sets are combined?
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.