Last updated on May 26th, 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 more. Here we will be discussing Roman Numerals, rules, and examples.
Royal titles, such as Henry I, Henry II, and so on, use Roman Numerals. Have you noticed the names and wondered what these symbols (I and II) represented? Those are Roman Numerals.
In ancient times, people used fingers, sticks, and bones to count. As life became more complex, a standardized form was required for counting. Ancient Romans used the Roman Numeral system for counting. 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 CMXII to represent 912, where C is 100, M is 1000, X is 10, and II is 2. 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 a smaller number is placed after a larger number. For example, XII → X + I + I → 10 + 1 + 1 = 12
Certain Roman Numerals can be repeated three times. III → 3.
If a small number is placed before a large number, we subtract the smaller number from the larger one. For example, IX → X - I → 10 - 1 = 9
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, and for 8, we write VIII, not IIIIIIII.
Let’s now learn how to write 912 in Roman Numerals. Follow these methods to write numbers 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 912 in Roman numerals using the expansion method. To write 912 in Roman Numerals, follow these steps,
Step 1: Break the number based on place value. Place values are ones, tens, hundreds, etc. For 912, we write it as 900 + 10 + 2
Step 2: Convert the number into Roman Numerals
Step 3: Combine the Roman Numerals together. Therefore, 912 in Roman Numerals is CM (900) + X (10) + II (2) = CMXII
When writing a large number in Roman Numerals, we group the number. To write 912 in Roman Numerals, we group 912 as 900 + 10 + 2
So, 912 is written as CMXII in Roman Numerals.
Students 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.
Calculate the sum of CM and XII.
The sum of CM and XII is CMXII.
CM is 900 and XII is 12.'
The sum of 900 and 12 is 912.
Therefore, 912 in Roman numerals is CMXII.
A library has CMXII books, and they are planning to distribute them equally among VI schools. How many books will each school receive?
Each school will receive CLII books.
To find the number of books each school receives, divide the total number of books by the number of schools.
CMXII is 912,
VI is 6.
Dividing gives 912 ÷ 6 = 152.
152 in Roman numerals is CLII.
If a historian collects artifacts from the years DCCC and CXII, what is the total number of years represented by these artifacts?
The total number of years is CMXII.
Adding the years DCCC (800) and CXII (112) results in 800 + 112 = 912.
Thus, the total number of years represented is 912, which is CMXII in Roman numerals.
A collector has CMXII coins and decides to sell CCC of them. How many coins will they have left?
The collector will have DCXII coins left.
Subtracting CCC (300) from CMXII (912) gives 912 - 300 = 612.
Therefore, the collector will have 612 coins left, which is DCXII in Roman numerals.
Write the Roman numeral for the sum of DCCC, CX, and II using the expansion method.
The Roman numeral is CMXII.
First, convert the numbers to Roman numerals:
DCCC = 800,
CX = 110,
II = 2.
Adding these gives 800 + 110 + 2 = 912.
Using the expansion method: 912 = 900 + 10 + 2 = CMXII.
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.