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Last updated on March 29th, 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, use Roman numerals. Have you noticed these names and wondered what these symbols (I and II) represented? Those are the Roman numerals. Earlier, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was required. Ancient Romans used the Roman numeral system. 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 CCXLIX to represent 249. Here, CC is 200, XL is 40, and IX is 9. 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 a smaller number is placed after a larger number. For example, VI → V + I → 5 + 1 = 6.
Rule 2: Repetition Method
Certain Roman numerals can be repeated up to three times. For example, CCC → 300.
Rule 3: Subtraction Method
If a smaller number precedes a larger number in Roman numerals, we subtract the smaller number from the larger number. For example, IX → X - I → 10 - 1 = 9.
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 won't write LL for 100; instead, we use C, and for 8, we write VIII, not IIIIIIII.
Let’s now learn how to write 249 in Roman numerals. Follow these methods to write the number in Roman numerals.
In the expansion method, based on place value, the number is broken down. In this section, we will learn how to write 249 in Roman numerals using the expansion method.
To write 249 in Roman numerals, follow the steps:
Step 1: Break the number based on place value: hundreds, tens, and ones.
For 249, we write it as 200 + 40 + 9.
Step 2: Convert the numbers into Roman numerals:
200 in Roman Numerals — CC
40 in Roman Numerals — XL
9 in Roman Numerals — IX
Step 3: Combine the Roman numerals together.
Therefore, 249 in Roman numerals is CC (200) + XL (40) + IX (9) = CCXLIX.
A historian finds a document stating that a Roman legion consisted of CCXLIX soldiers. If the legion was divided equally into VII cohorts, how many soldiers were in each cohort?
An archaeologist discovers CCXLIX ancient coins and wants to distribute them equally among IX museums. How many coins will each museum receive?
A researcher is analyzing the sum of two ancient Roman accounts: one with a balance of CLX and another with a balance of LXXXIX. What is the total balance?
During a history lesson, a student learns that the difference between CCC and LI is a significant number. What is this difference in Roman numerals?
Convert the result of the expression (200 + 49) into 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.