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Last updated on February 25th, 2025
Roman numerals are a method of expressing numbers using specific symbols: I, V, X, L, C, D, and M. Roman Numerals are commonly utilized 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, etc., use Roman Numerals. Have you noticed these symbols and wondered what they represent? Those are Roman Numerals. In ancient times, people used fingers, sticks, and bones for counting. As life became more complex, a standardized form was necessary.
The ancient Romans developed the Roman Numeral system. I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are the symbols used for counting. In Roman Numerals, we use CMLXXX to represent 980. Here, CM is 900, L is 50, and XXX is 30.
Let’s learn more about Roman numerals and how to write them.
Certain basic rules must be remembered when writing numbers in Roman Numerals. Let's discuss some of these rules.
When a smaller numeral appears after a larger numeral, the values are added. For example, LX → L + X → 50 + 10 = 60
Certain Roman Numerals can be repeated up to three times to represent values. For example, XXX → 30.
When a smaller numeral precedes a larger numeral, it is subtracted from the larger numeral. For example, XC → C - X → 100 - 10 = 90
Symbols cannot be repeated more than three times, and symbols like V, L, and D cannot be repeated. For instance, we don't write LL for 100; instead, we use C.
Let’s learn how to write 980 in Roman Numerals using these methods:
In the expansion method, numbers are broken down based on place value. Here's how to write 980 in Roman Numerals using this method:
Step 1: Break the number based on place value: hundreds, tens, and ones. For 980, we write it as 900 + 80.
Step 2: Convert each part into Roman Numerals:
Step 3: Combine the Roman Numerals together: Therefore, 980 in Roman Numerals is CM (900) + LXXX (80) = CMLXXX
When writing a number in Roman Numerals, we group the numbers. For 980, group it as 900 + 80.
So, 980 is written as CMLXXX in Roman Numerals.
A historian discovered CMLXXX ancient coins and wants to distribute them equally among L groups. How many coins will each group receive?
An archaeologist found two artifacts marked with CDXC and CDXC. What is the total value of these artifacts in Roman numerals?
A teacher gives a test with CMLXXX questions. If a student answers DCCCLXX correctly, how many questions did they miss?
Write the Roman numeral for the difference between M and XX.
Express the sum of DCCC and CLXXX in Roman numerals 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.