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Last updated on February 24th, 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 more. Here, we will be discussing Roman Numerals, rules, and examples.
The royal titles, such as Henry I, Henry II, and so on. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman Numerals. Earlier people used to count using fingers, sticks, bones, etc. When life became complex, a standard form was required to count. Ancient Romans used the Roman Numeral system to count. 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 DCCVII to represent 707, where D is 500, CC is 200, and VII is 7. 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 the smaller number is placed after the larger number. For example, VII → V + I + I → 5 + 1 + 1 = 7.
Rule 2: Repetition Method
To write larger numbers, the Roman Numerals I, X, C, and M can be repeated up to three times. For example, CCC → 300.
Rule 3: Subtraction Method
If a smaller number precedes a larger number, the smaller number is subtracted from the larger one. For example, XL → L - X → 50 - 10 = 40.
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 VV for 10; instead, we use X.
Let’s now learn how to write 707 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 707 in Roman numerals using the expansion method.
To write 707 in Roman Numerals, follow the steps:
Step 1: The number is broken down based on place value: hundreds, tens, and ones.
For 707, we write it as 700 + 7.
Step 2: Converting the number into Roman Numerals:
700 in Roman Numerals — DCC (500 + 200)
7 in Roman Numerals — VII
Step 3: Combining the Roman Numerals together:
Therefore, 707 in Roman Numerals is DCC (700) + VII (7) = DCCVII.
When writing a large number into Roman Numerals, we group the number.
To write 707 in Roman Numerals, we group 707 as 700 + 7.
700 in Roman Numerals — DCC
7 in Roman Numerals — VII
So, 707 is written as DCCVII in Roman Numerals.
A historian finds a manuscript detailing the construction of a bridge that lasted for DCC years and was reconstructed every CL years. How many times was the bridge reconstructed?
A scribe needs to copy a scroll DCCVII times and plans to complete it over the course of VII days. How many scrolls must the scribe copy each day?
Calculate the sum of CCCLIII and CCCLIV.
What is the difference between DCCX and III?
Write the Roman Numeral for 300 + 407 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.