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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 like I and II. Roman Numerals have been used since ancient times when people counted with fingers, sticks, bones, etc.
As life became more complex, a standardized form of counting was needed, leading to the adoption of 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 DCLXCVIII to represent 698, where D is 500, C is 100, LX is 60, and VIII is 8.
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.
The addition method is used when a smaller number is placed after a larger number. For example, VIII → V + III → 5 + 3 = 8
To write a large number, certain Roman Numerals can be repeated up to three times. For example, III → 3.
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number. For example, IX → X - I → 10 - 1 = 9
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 VV for 10; instead, we use X, and for 8, we write VIII, not IIIIIIII.
Let’s now learn how to write 698 in Roman Numerals. Follow these methods to write the number in Roman Numerals.
In the expansion method, based on the place value, the number is broken down. In this section, we will learn how to write 698 in Roman numerals using the expansion method. To write 698 in Roman Numerals, follow these steps:
Step 1: Break down the number based on place value. Place values are ones, tens, hundreds, etc. For 698, we write it as 500 + 100 + 90 + 8.
Step 2: Convert the number into Roman Numerals
Step 3: Combine the Roman Numerals together. Therefore, 698 in Roman Numerals is D (500) + C (100) + XC (90) + VIII (8) = DCLXCVIII
When writing a large number into Roman Numerals, we group the number. To write 698 in Roman Numerals, we group 698 as 500 + 100 + 90 + 8.
So, 698 is written as DCLXCVIII in Roman Numerals.
Addition rule: The addition method is used when a large numeral is followed by a smaller numeral, where the values are added. For example, VIII = V + III = 5 + 3 = 8. Grouping method: Here, numbers are grouped based on their place value and then converted into Roman numerals. For example, 698 = 500 + 100 + 90 + 8 = DCLXCVIII. Repetition rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, III = 3 (I is repeated three times to represent the number 3). Subtraction rule: The subtraction method is used when a smaller numeral precedes a larger numeral. For example, IX = X - I = 10 - 1 = 9. Limitation rule: Certain symbols like V, L, and D cannot be repeated.
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.