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Last updated on May 26th, 2025

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CLXXIX in Roman Numerals

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To meet their daily commerce and administration needs, the ancient Romans developed Roman Numerals. It used a combination of seven symbols — I, V, X, L, C, D, and M to represent numbers. Roman numerals were used to record transactions, keep track of data, and label military units. In this topic, we are going to learn about the Roman numeral CLXXIX.

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What is CLXXIX in Roman Numerals?

Ancient Romans discovered that counting fingers could get very complicated after 10. So to overcome the complexity, the Roman numeric system was developed. This was widely used throughout Europe as a standard writing system until the late Middle Ages.

 

Seven symbols are used to represent numbers in the Roman numeric system — I, V, X, L, C, D, and M. The numerals are made up of different combinations of these symbols. CLXXIX in Roman numerals can be written in number form by adding the values of each Roman numeral, i.e., CLXXIX = 179.

 

Let us learn more about the Roman numeral CLXXIX, how we write it, the mistakes we usually make, and ways to avoid these mistakes.

 

clxxix roman numerals

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Basic Rules for CLXXIX in Roman Numerals

When writing Roman numerals, there are a few rules that we need to follow based on the Roman numerals we are trying to write. In this section, we will learn about the rules when writing Roman numerals and how to represent them.

 

Rule 1: Addition Method:

When a larger symbol is followed by a smaller symbol, we add the numerals to each other. For example, in VIII, we have 5 + 3 = 8.

 

Rule 2: Repetition Method:

A symbol that is repeated three times in continuation increases the value of the numeral. For example, XXX = 30.

 

Rule 3: Subtraction Method:

We use the subtraction method when a larger symbol follows a smaller symbol. For example, XL = 40 (which is 50 – 10).

 

Rule 4: Limitation Rule:

Symbols cannot be repeated more than three times, and some symbols, such as V, L, and D, cannot be repeated more than once. For example, 10 is represented as X and not VV.

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How to Write CLXXIX in Roman Numerals?

Let us learn about how to write CLXXIX in Roman numerals. There are two methods that we can use to write Roman numerals:

 

  • By Expansion Method
  • By Grouping Method
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CLXXIX in Roman Numerals by Expansion Method

The breaking down of Roman numerals into parts and then converting them into numerals is what we call the expansion method. The expansion method is the breaking down of Roman numerals into numerical form and adding them to get the final number.

 

Step 1: Break the Roman numerals into parts.

 

Step 2: Now write each of the Roman numerals with its numerical digit in the place value.

 

Step 3: Add the numerals together.

 

For CLXXIX,

 

Step 1: First, we break the Roman numerals. CLXXIX = C + L + X + X + I + X

 

Step 2: Write the Roman Numerals for each part.

The Roman Numeral C is 100

The Roman Numeral L is 50

The Roman Numeral X is 10

The Roman Numeral I is 1

 

Step 3: Combine all the numbers. C + L + X + X + I + X = 100 + 50 + 10 + 10 + 9 = 179. Therefore, the Roman Numeral CLXXIX is 179.

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CLXXIX in Roman Numerals by Grouping Method

Using subtraction and addition rules, we will apply the grouping method. This means we break the Roman numerals into smaller groups, which makes it easier to work with. This method groups the Roman numerals logically, and then we write the numbers for each group.

 

Step 1: Take the largest number and write the number for that Roman numeral.

 

Step 2: Write the Roman numeral using the subtraction and addition rules.

 

Example: Let’s take the Roman numeral CLXXIX.

 

Step 1: The larger Roman numerals are what we will begin with. Once split, the Roman numerals we get are CL, XX, and IX. The numeral for CL is 150.

 

Step 2: Now we need to either add or subtract the smaller number, depending on its place.

 

Here we add XX and IX to CL, and we will get CLXXIX. The Roman numeral XX is 20. The Roman numeral IX is 9. Therefore, the numeral of CLXXIX is 179.

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Common Mistakes and How to Avoid Them in CLXXIX Roman Numerals

Students can make mistakes when studying Roman numerals. Here are a few common mistakes students make, and ways to avoid them.

Mistake 1

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Mistakes when applying the repetition method

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It can be quite confusing for beginners to remember that Roman Numerals cannot be repeated more than three times. Another thing to keep in mind is that Roman Numerals such as V, L, and D cannot be repeated.

 

For example, writing LL as 100 is incorrect; the correct answer is C.

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CLXXIX Roman Numerals Examples

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Problem 1

Calculate the sum of CLXXIX and XXI. Provide the result in Roman numerals.

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The sum is CC.

Explanation

Convert both Roman numerals to their decimal form:

CLXXIX = 179

XXI = 21

Now add the numbers: 179 + 21 = 200

Convert 200 into its Roman numeral: 200 = CC

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Problem 2

Subtract XL from CLXXIX and express the answer in Roman numerals.

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The difference is CXXXIX.

Explanation

Convert the Roman numerals to decimal:

CLXXIX = 179

XL = 40

Subtract the numbers: 179 - 40 = 139

Convert 139 to Roman numerals: 100 (C) + 30 (XXX) + 9 (IX) = CXXXIX

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Problem 3

What is the result of CLXXIX divided by XIII? Provide the answer in Roman numerals.

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The result is XIII.

Explanation

Convert CLXXIX to decimal:

CLXXIX = 179

Divide by 13: 179 / 13 = 13

Convert 13 to Roman numerals: 13 = 10 (X) + 3 (III) = XIII

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Problem 4

Find the product of CLXXIX and II. Express the answer in Roman numerals.

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The product is CCCLVIII.

Explanation

Convert CLXXIX and II to decimal:

CLXXIX = 179

II = 2

Multiply the numbers: 179 × 2 = 358

Convert 358 to Roman numerals: 300 (CCC) + 50 (L) + 8 (VIII) = CCCLVIII

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Problem 5

Translate CLXXIX into its decimal form.

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In decimal form, CLXXIX is 179.

Explanation

Break CLXXIX into components:

C = 100

LXX = 70 (L + X + X)

IX = 9 (I before X)

Add values: 100 + 70 + 9 = 179

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FAQs on CLXXIX in Roman Numerals

1.What is LXXIX in Roman numerals?

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2.Is CLXXIX a prime number?

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3.What is CLXXIX + CLXXIX?

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4.What is CXIII?

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5.Subtract XXIX from CLXXIX

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6.How can children in United Arab Emirates use numbers in everyday life to understand CLXXIX in Roman Numerals?

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7.What are some fun ways kids in United Arab Emirates can practice CLXXIX in Roman Numerals with numbers?

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8.What role do numbers and CLXXIX in Roman Numerals play in helping children in United Arab Emirates develop problem-solving skills?

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9.How can families in United Arab Emirates create number-rich environments to improve CLXXIX in Roman Numerals skills?

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Important Glossaries for CLXXIX in Roman Numerals

  • Limitation Rule: There are some symbols that cannot be repeated more than once (V, L, D). For example, LVV for 60 is wrong; the correct answer is LX.

 

  • Place Value: The position of a digit in a number; this position determines its value. For example, the number 7 in 179 is in the ten's place.

 

  • Prime Number: A number that has only two factors or multiples is called a prime number. For example, 11 is a prime number that has only two factors, 1 and itself.

 

  • Subtraction Method: A method used in Roman numerals where a smaller numeral before a larger numeral indicates subtraction. For example, IX is 9.

 

  • Roman Numeral System: A numeral system originating from ancient Rome, using combinations of letters from the Latin alphabet (I, V, X, L, C, D, M).
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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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