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Last updated on May 26th, 2025

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177 in Roman Numerals

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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.

177 in Roman Numerals for Vietnamese Students
Professor Greenline from BrightChamps

What is 177 in Roman Numerals?

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.

177 in roman numerals

Professor Greenline from BrightChamps

Basic Rules for 177 in Roman Numerals

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.

Professor Greenline from BrightChamps

How to Write 177 in Roman Numerals

Let’s now learn how to write 177 in Roman Numerals. Follow these methods to write the number in Roman Numerals.

 

  • By Expansion Method
  • By Grouping Method
Professor Greenline from BrightChamps

177 in Roman Numeral by Expansion Method

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

Professor Greenline from BrightChamps

177 in Roman Numeral by Grouping Method

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.

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Common Mistakes and How to Avoid Them in 177 Roman Numerals

Students make mistakes when writing a number in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and the ways to avoid them.

Mistake 1

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Errors in repetition method

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The repetition method can be confusing for beginners as it states that Roman Numerals cannot be repeated more than three times. In contrast, some of the Roman Numerals such as V, L, and D cannot be repeated.

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177 in Roman Numerals Examples

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Problem 1

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.

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The number of years that have passed is MDCCCXLVI.

Explanation

CLXXVII is 177 in Roman numerals, and MMXXIII is 2023. The number of years that have passed is 2023 - 177 = 1846, which is MDCCCXLVI in Roman numerals.

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Problem 2

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?

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Each member will receive XIX coins.
 

Explanation

To find the number of coins each team member receives, divide CLXXVII by IX. 

CLXXVII = 177

IX = 9

Therefore, 177 / 9 = 19.

19 in Roman numerals is XIX.

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Max, the Girl Character from BrightChamps

Problem 3

Calculate the sum of LXXXVIII and LXXXIX in Roman numerals.

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The sum of LXXXVIII and LXXXIX is CLXXVII.

Explanation

To find the sum, add the two numbers.

LXXXVIII = 88

LXXXIX = 89

88 + 89 = 177

177 in Roman numerals is CLXXVII.

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Problem 4

A museum has a collection of CCXLVII artifacts and decides to rotate CLXX of them for display. How many artifacts will remain in storage?

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The number of artifacts remaining in storage is LXXVII.

Explanation

To find the number of artifacts remaining, subtract the displayed artifacts from the total.

CCXLVII = 247

CLXX = 170

247 - 170 = 77

77 in Roman numerals is LXXVII.

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Problem 5

Convert the year that is the sum of the Roman numerals for 100 and 77 using the expansion method.

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The Roman numeral for the sum of 100 and 77 is CLXXVII.

Explanation

First, convert the numbers 100 and 77 into Roman numerals.

100 - C

77 - LXXVII

Add the numbers together: 100 + 77 = 177

Using the expansion method: 177 = 100 + 77 = CLXXVII.

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FAQs on 177 in Roman Numerals

1.What is 90 in Roman numerals?

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2.How to write 177 in Roman numerals?

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3.What is 186 in Roman Numerals?

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4.Is CLXXVII a prime number?

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5.What are the multiples of 177?

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Professor Greenline from BrightChamps

Important Glossaries for 177 in Roman Numerals

  • Addition rule: The addition method is used when a large number is followed by a smaller numeral, here the values are added. For example, CLXXVII = C + L + X + X + V + I + I = 177.

 

  • Grouping method: Here the given numbers are grouped based on their place value, and then we convert each group into its Roman numerals. For example, 177 = 100 + 50 + 10 + 10 + 5 + 1 + 1 = CLXXVII.

 

  • Repetition rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, XXX = 30 (X is repeated three times to represent the number 30).

 

  • Subtraction rule: The subtraction method is used when a smaller numeral precedes a larger numeral. For example, IX = X - I = 9.

 

  • Limitation rule: Some symbols cannot be repeated, such as V, L, and D. For example, we don't write LL for 100; instead, we use C.
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Hiralee Lalitkumar Makwana

About the Author

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.

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Fun Fact

: She loves to read number jokes and games.

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