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Last updated on February 27th, 2025
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.
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 to count using 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), C (100), D (500), and M (1000) are the symbols we use to count.
In Roman Numerals, we use XV with a vinculum (a line over the numerals), to represent 15000, where X is 10000 and V is 5000. Let’s learn more about Roman numerals and how we write them.
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.
The addition method is used when the smaller number is placed after the larger number. For example, VI → V + I → 5 + 1 = 6
To write a large number, there are certain Roman Numerals that can be repeated up to three times. III → 3.
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number, it is a subtraction method. For example, IX → X - I → 10 - 1 = 9
For numbers larger than 3999, a bar or vinculum is placed over a numeral to multiply its value by 1000. For example, \(\overline{X}\) is 10000.
Let’s now learn how to write 15000 in Roman Numerals. Follow these methods to write the number in Roman Numerals.
In the expansion method, based on the place value, the number is broken down. In this section, we will learn how to write 15000 in Roman numerals using the expansion method. To write 15000 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc. For 15000, we write it as 10000 + 5000
Step 2: Converting the number into Roman Numerals 10000 in Roman Numerals — \(\overline{X}\) 5000 in Roman Numerals — \(\overline{V}\)
Step 3: Combining the Roman Numerals together. Therefore, 15000 in Roman Numerals is \(\overline{X}\) (10000) + \(\overline{V}\) (5000) = \(\overline{XV}\)
When writing a large number into Roman Numerals, we group the number.
To write 15000 in Roman Numerals, we group 15000 as 10000 + 5000.
10000 in Roman Numerals — \(\overline{X}\)
5000 in Roman Numerals — \(\overline{V}\)
So, 15000 is written as \(\overline{XV}\) in Roman Numerals.
A historian discovers a manuscript indicating a treasure was hidden in the year XV millennia ago from the current year. What year was the treasure hidden in?
A museum received a donation of XV paintings, each valued at M dollars. What is the total value of the donation?
A marathon was held to raise funds, and each participant pledged to run XV kilometers. If there were M participants, how many kilometers were pledged in total?
A researcher is studying ancient Roman architecture and finds a blueprint showing a building to be constructed with an area of XV square meters per floor. If the building has X floors, what is the total area?
A charity distributes XV thousand meals each month. If they continue at this rate, how many meals will they distribute in a year?
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.
: She loves to read number jokes and games.