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Last updated on March 11th, 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.
Royal titles, such as Henry I, Henry II, and so on, often use Roman numerals. Have you noticed these symbols (I, II, etc.) and wondered what they represent? Those are Roman Numerals. Originally, people used fingers, sticks, bones, etc., for counting. As life became more complex, a standard form was required for counting.
Ancient Romans developed the Roman Numeral system for this purpose. We use the symbols I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) for counting. In Roman Numerals, we use MCL to represent 1150, where M is 1000, C is 100, and L is 50.
Let’s explore Roman numerals and how we write them.
Certain basic rules must be followed when writing numbers in Roman Numerals. In this section, we will discuss some key rules to remember when writing a number in Roman numerals.
The addition method is used when a smaller number is placed after a larger number. For example, MCL → M + C + L → 1000 + 100 + 50 = 1150
To write larger numbers, certain Roman Numerals can be repeated up to three times. For example, CCC → 300.
If a smaller number precedes a larger number in Roman Numerals, we subtract the smaller number from the larger number. For example, XL → L - X → 50 - 10 = 40
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, we write 8 as VIII, not IIIIIIII.
Let’s learn how to write 1150 in Roman Numerals. Follow these methods to write the number in Roman Numerals:
In the expansion method, numbers are broken down based on their place value. In this section, we will learn how to write 1150 in Roman numerals using the expansion method. To write 1150 in Roman Numerals, follow these steps:
Step 1: Break the number based on place value, such as thousands, hundreds, tens, and ones. For 1150, we write it as 1000 + 100 + 50.
Step 2: Convert each number into Roman Numerals:
Step 3: Combine the Roman Numerals together. Therefore, 1150 in Roman Numeral is M (1000) + C (100) + L (50) = MCL
When writing a large number in Roman Numerals, we group the number. To write 1150 in Roman Numerals, we group 1150 as 1000 + 100 + 50:
So, 1150 is written as MCL in Roman Numerals.
Addition Rule: The addition method is used when a smaller numeral follows a larger numeral, here the values are added. For example, MCL = M + C + L = 1000 + 100 + 50 = 1150. Grouping Method: The given numbers are grouped based on their place value and then converted into their Roman Numerals. For example, 1150 = 1000 + 100 + 50 = MCL. Repetition Rule: Certain symbols (I, X, C, M) in the Roman numeral system can be repeated up to three times. For example, CCC = 300 (C is repeated three times). Subtraction Rule: The subtraction method is used when a smaller numeral precedes a larger numeral. For example, XL = L - X = 50 - 10 = 40. Roman Numerals: A numeral system originating from ancient Rome, using combinations of letters from the Latin alphabet (I, V, X, L, C, D, M) to signify values.
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.