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Last updated on February 25th, 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, use Roman Numerals. Have you noticed these 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 CMXX to represent 920, where CM is 900 and XX is 20. 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, XX → X + X → 10 + 10 = 20.
To write a large number, certain Roman Numerals 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. For example, CM → M - C → 1000 - 100 = 900.
The symbols cannot be repeated more than three times, and some symbols like V, L, and D cannot be repeated. For example, we won't write VV for 10; instead, we use X.
Let’s now learn how to write 920 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 920 in Roman numerals using the expansion method. To write 920 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc. For 920, we write it as 900 + 20.
Step 2: Converting the number into Roman Numerals:
Step 3: Combining the Roman Numerals together: Therefore, 920 in Roman Numeral is CM (900) + XX (20) = CMXX.
When writing a large number into Roman Numerals, we group the number. To write 920 in Roman Numerals, we group 920 as 900 + 20.
So, 920 is written as CMXX in Roman Numerals.
A historian discovers a scroll that mentions a battle involving CMXX soldiers. If each soldier was armed with III weapons, find the total number of weapons used in the battle.
An ancient architect designed a building with CMXX columns, and each column supports X floors. Calculate the total number of floors supported by these columns.
A museum has CMXX artifacts equally distributed across XX exhibits. Determine the number of artifacts per exhibit.
A library has CMXX books. If they acquire an additional CC books, how many books will they have in total?
Write the Roman Numeral for 920 - 45 using the subtraction method.
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.