130 LearnersLast updated on May 26th, 2025
73 in Roman Numerals
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.
What is 73 in Roman Numerals?
The royal titles, such as Henry I, Henry II, and so on, often use Roman numerals. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman numerals.
Earlier, people used to count using fingers, sticks, bones, etc. 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), C (100), D (500), and M (1000) are the symbols we use to count.
In Roman numerals, we use LXXIII to represent 73, where L is 50, X is 10, and III is 3. Let’s learn more about Roman numerals and how we write them.
Basic Rules for 73 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, LXXIII → L + X + X + I + I + I → 50 + 10 + 10 + 1 + 1 + 1 = 73.
Rule 2: Repetition Method
To write a large number, there are certain Roman numerals that can be repeated up to three times. For example, III → 3.
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, IX → X - I → 10 - 1 = 9.
Rule 4: Limitation Rule
The symbols cannot be repeated more than three times, and symbols like V, L, and D cannot be repeated. For example, we won't write LL for 100; instead, we use C, and for 8, we write VIII, not IIIIIIII.
How to Write 73 in Roman Numerals
Let’s now learn how to write 73 in Roman numerals. Follow these methods to write the number in Roman numerals.
- By Expansion Method
- By Grouping Method
73 in Roman Numerals 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 73 in Roman numerals using the expansion method.
To write 73 in Roman numerals, follow these steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc.
For 73, we write it as 50 + 20 + 3.
Step 2: Convert the numbers into Roman numerals.
50 in Roman numerals is L.
20 in Roman numerals is XX.
3 in Roman numerals is III.
Step 3: Combine the Roman numerals together.
Therefore, 73 in Roman numerals is L (50) + XX (20) + III (3) = LXXIII.
73 in Roman Numerals by Grouping Method
When writing a large number into Roman numerals, we group the number. To write 73 in Roman numerals, we group 73 as 50 + 20 + 3.
50 in Roman numerals is L.
20 in Roman numerals is XX.
3 in Roman numerals is III.
So, 73 is written as LXXIII in Roman numerals.
Numbers Related to 73 in Roman Numerals
Roman numerals follow a certain pattern, making them look similar. In this section, we will learn some numbers related to the Roman numeral 73.
| Number | Roman Numeral | Breakdown |
|---|---|---|
| 70 | LXX | 50 + 10 + 10 = 70 |
| 71 | LXXI | 50 + 10 + 10 + 1 = 71 |
| 72 | LXXII | 50 + 10 + 10 + 2 = 72 |
| 73 | LXXIII | 50 + 10 + 10 + 3 = 73 |
Common Mistakes and How to Avoid Them in 73 Roman Numerals
Students often make mistakes when writing numbers in Roman numerals. To master Roman numerals, we can learn a few common mistakes and the ways to avoid them.
Mistake 1
Errors in repetition method
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.
Problem 1
A historian finds that the distance between two ancient cities is LXXIII Roman miles and wants to convert this distance into regular miles. If 1 Roman mile is equivalent to 0.92 regular miles, how many regular miles is this distance?
The distance in regular miles is 67.16.
Explanation
First, convert LXXIII to the Arabic numeral: LXXIII = 73.
Then, use the conversion factor: 73 × 0.92 = 67.16.
Therefore, the distance is 67.16 regular miles.
Problem 2
A teacher has a total of CCCLXV apples and wants to distribute them equally among V students. How many apples will each student receive?
Each student will receive LXXIII apples.
Explanation
To find the number of apples each student receives, divide the total number of apples by the number of students: CCCLXV / V.
CCCLXV = 365
V = 5
Therefore, 365 / 5 = 73.
73 in Roman numerals is LXXIII.
Problem 3
Find the sum of XLV and XXVIII.
The sum of XLV and XXVIII is LXXIII.
Explanation
The sum is the result of adding two numbers.
XLV = 45
XXVIII = 28
45 + 28 = 73
73 in Roman Numerals is LXXIII.
The sum of XLV and XXVIII is LXXIII.
Problem 4
What is the difference between LXXX and VII?
The difference between LXXX and VII is LXXIII.
Explanation
The difference of two numbers is the value we get when subtracting one number from the other.
LXXX = 80
VII = 7
80 - 7 = 73
73 in Roman Numerals can be written as LXXIII.
Problem 5
Write the Roman Numeral for 50 + 23 using the expansion method.
The Roman numeral for 50 + 23 is LXXIII.
Explanation
Step 1: First convert the numbers 50 and 23 into Roman numerals.
50 = L
23 = XXIII
Add the numbers together: 50 + 23 = 73.
Using the expansion method: 73 = 70 + 3 = LXXIII.
FAQs on 73 in Roman Numerals
1.What is 9 in Roman numerals?
2.How to write 73 in Roman numerals?
3.What is 76 in Roman numerals?
4.Is LXXIII a prime number?
5.What are the multiples of 73?
6.How can children in United States use numbers in everyday life to understand 73 in Roman Numerals?
7.What are some fun ways kids in United States can practice 73 in Roman Numerals with numbers?
8.What role do numbers and 73 in Roman Numerals play in helping children in United States develop problem-solving skills?
9.How can families in United States create number-rich environments to improve 73 in Roman Numerals skills?
Important Glossaries for 73 in Roman Numerals
- Addition rule: The addition method is used when a large number is followed by a smaller numeral, and the values are added. For example, LXXIII = L + XX + III = 50 + 20 + 3 = 73.
- Grouping method: Here, the given numbers are grouped based on their place value and then converted into Roman numerals. For example, 73 = 50 + 20 + 3 = LXXIII.
- Repetition rule: Certain symbols (I, X, C, M) in the Roman numeral system can be repeated only up to three times. For example, III = 3 (I is repeated three times to represent the number 3).
- Subtraction rule: If a smaller numeral precedes a larger numeral, it is subtracted. For example, IV = 5 - 1 = 4.
- Limitation rule: Some symbols, such as V, L, and D, cannot be repeated. For example, 100 is written as C, not LL.
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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
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