123 LearnersLast updated on May 26th, 2025
CLXXIX in Roman Numerals
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.
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.
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.
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
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.
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.
Numbers Related to CLXXIX in Roman Numerals
We follow a pattern when it comes to writing Roman numerals. In this section, we will write some numbers related to the Roman numeral CLXXIX:
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
Mistakes when applying the repetition method
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.
Mistake 2
Not subtracting the numerals correctly
The subtraction method is used when a smaller symbol follows a larger symbol. One should also remember that only specific symbols can be subtracted, like I and X.
For example, IL instead of XLIX for the number 49.
Mistake 3
Not grouping the numbers correctly.
When writing Roman numerals, we need to group the numbers correctly.
For example, the number 15, 10(X) + 5(V).
Mistake 4
Confusing similar-looking symbols for other numbers
Certain numerals have different numbers when placed in a different order. So we must make sure to fully understand the order of certain symbols and their placements. All symbols have to be placed in a different order to represent the correct number.
For example, IV(4) and VI (6) have the same symbols but are in different orders.
Mistake 5
Not counting all numbers when writing in Roman numerals.
Forgetting to count all numbers, when doing the expansion method or grouping method, can lead to mistakes.
For example, writing CLXX (170) and forgetting IX (9) for 179. Recheck steps once done during any arithmetic operation.
CLXXIX Roman Numerals Examples
Problem 1
Calculate the sum of CLXXIX and XXI. Provide the result in Roman numerals.
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
Problem 2
Subtract XL from CLXXIX and express the answer in Roman numerals.
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
Problem 3
What is the result of CLXXIX divided by XIII? Provide the answer in Roman numerals.
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
Problem 4
Find the product of CLXXIX and II. Express the answer in Roman numerals.
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
Problem 5
Translate CLXXIX into its decimal form.
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
FAQs on CLXXIX in Roman Numerals
1.What is LXXIX in Roman numerals?
2.Is CLXXIX a prime number?
3.What is CLXXIX + CLXXIX?
4.What is CXIII?
5.Subtract XXIX from CLXXIX
6.How can children in United Arab Emirates use numbers in everyday life to understand CLXXIX in Roman Numerals?
7.What are some fun ways kids in United Arab Emirates can practice CLXXIX in Roman Numerals with numbers?
8.What role do numbers and CLXXIX in Roman Numerals play in helping children in United Arab Emirates develop problem-solving skills?
9.How can families in United Arab Emirates create number-rich environments to improve CLXXIX in Roman Numerals skills?
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.
Fun Fact
: She loves to read number jokes and games.
