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Last updated on February 20th, 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. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman Numerals. Earlier people used fingers, sticks, bones, etc., to count. 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), D (500), and M (1000) are the symbols we use to count.
In Roman Numerals, we use CLXXVII to represent 177, where C is 100, L is 50, X is 10, V is 5, and I is 1. 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, CLXXVII → C + L + X + X + V + I + I → 100 + 50 + 10 + 10 + 5 + 1 + 1 = 177
Rule 2: Repetition Method
To write a large number, there are certain Roman Numerals that can be repeated up to three times. For example, XXX → 30.
Rule 3: Subtraction Method
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number. 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 LL for 100; instead, we use C.
Let’s now learn how to write 177 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 177 in Roman numerals using the expansion method.
To write 177 in Roman Numerals, follow the steps:
Step 1: The number is broken based on the place value. Place values include ones, tens, hundreds, etc.
For 177, we write it as 100 + 50 + 10 + 10 + 5 + 1 + 1
Step 2: Converting the number into Roman Numerals
100 in Roman Numeral — C
50 in Roman Numeral — L
10 in Roman Numeral — X
5 in Roman Numeral — V
1 in Roman Numeral — I
Step 3: Combining the Roman Numerals together.
Therefore, 177 in Roman Numeral is C (100) + L (50) + X (10) + X (10) + V (5) + I (1) + I (1) = CLXXVII
When writing a large number in Roman Numerals, we group the number.
To write 177 in Roman Numerals, we group 177 as 100 + 50 + 10 + 10 + 5 + 1 + 1
100 in Roman Numeral — C
50 in Roman Numeral — L
10 in Roman Numeral — X
5 in Roman Numeral — V
1 in Roman Numeral — I
So, 177 is written as CLXXVII in Roman Numerals.
A historian is deciphering an ancient manuscript that mentions the year CLXXVII and needs to calculate how many years have passed since that year up to the year MMXXIII.
An archaeologist finds a chest buried with CLXXVII coins and wants to distribute them equally among IX team members. How many coins will each member receive?
Calculate the sum of LXXXVIII and LXXXIX in Roman numerals.
A museum has a collection of CCXLVII artifacts and decides to rotate CLXX of them for display. How many artifacts will remain in storage?
Convert the year that is the sum of the Roman numerals for 100 and 77 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.