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Last updated on May 26th, 2025

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LXIII 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 LXIII.

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What is LXIII 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. LXIII in Roman numerals can be written in number form by adding the values of each Roman numeral, i.e. LXIII = 63.

 

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

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Basic Rules for LXIII 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 LXIII in Roman Numerals?

Let us learn about how to write LXIII 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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LXIII in Roman Numeral 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 breaking down 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 LXIII,

 

Step 1: First we break the Roman numerals. LXIII = L + X + I + I + I

 

Step 2: Write the Roman Numerals for each part The Roman Numeral L is 50 The Roman Numeral X is 10 The Roman Numeral I is 1

 

Step 3: Combine all the numbers L + X + I + I + I = 50 + 10 + 1 + 1 + 1 = 63. Therefore, the Roman Numeral LXIII is 63.

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LXIII in Roman Numeral 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 LXIII.

 

Step 1: The larger Roman numerals are what we will begin with. Once split, the Roman numerals we get are L, X, and III. The numeral for L is 50

 

Step 2: Now we need to either add or subtract the smaller number, depending on its place. Here we add X and III to L, and we will get LXIII. The Roman numeral X is 10 The Roman numeral III is 3 Therefore, the numeral of LXIII is 63.

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Common Mistakes and How to Avoid Them in LXIII 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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LXIII Roman Numerals Examples

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Problem 1

Calculate the product of LXIII and II. Write the answer in Roman numerals.

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The product is CXXVI

Explanation

Convert both Roman numerals into their decimal form:

LXIII = 63

II = 2

Now multiply the numbers: 63 × 2 = 126

Convert the number into its Roman numeral: 126 = 100 (C) + 20 (XX) + 6 (VI) = CXXVI

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Problem 2

What is the sum of LXIII and XXXVII? Write in Roman numerals.

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The sum is C

Explanation

Convert the Roman numerals into their decimal form:

LXIII = 63

XXXVII = 37

Now add the numbers: 63 + 37 = 100

Convert the number into its Roman numeral: 100 = C

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Problem 3

Divide CXXVI by two and write the answer in Roman numerals.

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LXIII

Explanation

Convert CXXVI into its decimal form:

CXXVI = 126

Divide by 2: 126 / 2 = 63

Write 63 in Roman numerals: 63 = 50 (L) + 10 (X) + 3 (III) = LXIII

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Problem 4

Subtract XX from LXIII. Write the answer in Roman numerals.

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The difference is XLIII

Explanation

Convert the Roman numerals into their decimal form:

LXIII = 63

XX = 20

Now subtract the numbers: 63 - 20 = 43

Convert the number into its Roman numeral: 43 = 40 (XL) + 3 (III) = XLIII

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Problem 5

Convert LXIII into its decimal form.

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In decimal form, LXIII is 63

Explanation

Break LXIII into components:

L = 50

X = 10

III = 3 (I + I + I)

Add values: 50 + 10 + 3 = 63

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FAQs on LXIII in Roman Numerals

1.What is XIII in Roman numerals?

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2.Is LXIII a prime number?

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3.What is LXIII + LXIII?

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4.What is XXXIII?

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5.Subtract XIII from LXIII

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Important Glossaries for LXIII 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.
     
  • Addition Method: A method of adding values of Roman numerals, typically when a higher value precedes a lower value.
     
  • Subtraction Method: A method where a lower numeral before a higher numeral is subtracted from the higher numeral.
     
  • Place value: The position of a digit in a number, this position determines its value. For example, the number 6 in 63 is in the ten's place.
     
  • Roman Numerals: An ancient numeral system using 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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