Last updated on May 26th, 2025
Roman numerals are the 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 symbols and wondered what they represent? Roman Numerals are an ancient numbering system.
Earlier civilizations used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was required. Ancient Romans developed the Roman Numeral system. 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 CDXXXVI to represent 436. Here, CD is 400, XXX is 30, and VI is 6. 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, certain Roman Numerals can be repeated three times. For example, XXX → 30.
If a small number is placed before a larger number in Roman Numerals, we subtract the smaller number from the larger number. For example, IV → V - I = 5 - 1 = 4
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 DDDD for 2000; instead, we use MM.
Let’s now learn how to write 436 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 436 in Roman numerals using the expansion method. To write 436 in Roman Numerals, follow the steps,
Step 1: Break the number based on place value: hundreds, tens, and ones. For 436, we write it as 400 + 30 + 6.
Step 2: Convert these numbers into Roman Numerals.
400 in Roman Numerals — CD 30
in Roman Numerals — XXX
6 in Roman Numerals — VI
Step 3: Combine the Roman Numerals together. Therefore, 436 in Roman Numerals is CD (400) + XXX (30) + VI (6) = CDXXXVI
When writing a large number into Roman Numerals, we group the number. To write 436 in Roman Numerals, we group 436 as 400 + 30 + 6.
400 in Roman Numerals — CD
30 in Roman Numerals — XXX
6 in Roman Numerals — VI
So, 436 is written as CDXXXVI in Roman Numerals.
Students make mistakes when writing a number in Roman Numerals. To master Roman Numerals, we can learn a few common mistakes and the ways to avoid them.
Calculate the sum of CD and XXXVI.
The sum of CD and XXXVI is CDXXXVI.
To find the sum, add the given numbers.
CD = 400
XXXVI = 36
400 + 36 = 436 436 in Roman Numerals is CDXXXVI.
A historian has CDXXXVI ancient coins divided equally into IV treasure chests. How many coins are in each chest?
Each chest will contain CIX coins.
To find the number of coins in each chest, divide the total number of coins by the number of chests.
CDXXXVI = 436
IV = 4
436 / 4 = 109 109 in Roman Numerals is CIX.
A museum acquired a collection of CCC coins and later received an additional CXXXVI coins. What is the total number of coins?
The total number of coins is CDXXXVI.
Add the number of coins received initially and the additional coins.
CCC = 300
CXXXVI = 136
300 + 136 = 436 436 in Roman Numerals is CDXXXVI.
Find the difference between CDXXXVI and C.
The difference between CDXXXVI and C is CCCXXXVI.
Subtract the smaller number from the larger one to find the difference.
CDXXXVI = 436
C = 100
436 - 100 = 336 336 in Roman Numerals is CCCXXXVI.
Write the Roman Numeral for 400 + 36 using the expansion method.
The Roman numeral for 400 + 36 is CDXXXVI.
Step 1: Convert the numbers 400 and 36 into Roman numerals.
400 - CD
36 - XXXVI
Add the numbers together: 400 + 36 = 436 Using the expansion method: 436 = 400 + 30 + 6 = CD + XXX + VI = CDXXXVI.
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.