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 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 the names and wondered what these symbols (I and II) represented? Those are 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 CCXII to represent 212, where CC is 200, 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.
Rule 1: Addition Method
The addition method is used when the smaller number is placed after the larger number. For example, XII → X + II → 10 + 2 = 12.
Rule 2: Repetition Method
To write a large number, certain Roman Numerals can be repeated up to three times. For example, CCC → 300.
Rule 3: Subtraction Method
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the larger number. For example, IX → X - I → 10 - 1 = 9.
Rule 4: Limitation Rule
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 212 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 212 in Roman numerals using the expansion method.
To write 212 in Roman Numerals, follow the steps:
Step 1: Break the number based on the place value. Place values are ones, tens, hundreds, etc.
For 212, we write it as 200 + 10 + 2.
Step 2: Convert the numbers into Roman Numerals:
200 in Roman Numeral — CC
10 in Roman Numeral — X
2 in Roman Numeral — II
Step 3: Combine the Roman Numerals together.
Therefore, 212 in Roman Numerals is CC (200) + X (10) + II (2) = CCXII.
When writing a large number in Roman Numerals, we group the numbers.
To write 212 in Roman Numerals, we group 212 as 200 + 10 + 2:
200 in Roman Numerals — CC
10 in Roman Numerals — X
2 in Roman Numerals — II
So, 212 is written as CCXII 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.
A sculptor is creating two pieces, each with a base of CVI square inches. What is the total area for both pieces combined in Roman numerals?
The total area for both pieces is CCXII.
Each piece has a base of CVI square inches.
CVI = 106
The total area for both is 106 + 106 = 212.
212 in Roman numerals is CCXII.
A historian is cataloging CCCCLXIV artifacts into CCXXII boxes. Determine how many artifacts each box will contain.
Each box will contain II artifacts.
Divide the total number of artifacts by the number of boxes.
CCCCLXIV = 464
CCXXII = 222
464 / 222 = 2
II in Roman numerals represents 2.
Combine the populations of two ancient villages: the first has a population of CLXXXII, and the second has a population of XXX. What is the total population?
The total population is CCXII.
Add the populations of the two villages.
CLXXXII = 182
XXX = 30
182 + 30 = 212
212 in Roman numerals is CCXII.
A merchant has a stock of CCCXII apples. After selling C apples, how many apples are left in stock?
The number of apples left in stock is CCXII.
Subtract the number of apples sold from the total stock.
CCCXII = 312
C = 100
312 - 100 = 212
212 in Roman numerals is CCXII.
Convert the sum of 150 and 62 into Roman numerals using the expansion method.
The Roman numeral for 150 + 62 is CCXII.
Step 1: Convert the numbers to Roman numerals.
150 = CL
62 = LXII
Step 2: Add the numbers together: 150 + 62 = 212
Step 3: Using the expansion method: 212 = 200 + 10 + 2 = CCXII
The result is CCXII.
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.