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, often use Roman numerals. Have you noticed these 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 used to count.
In Roman numerals, we use CDLXXI to represent 471, where C is 100, D is 500, L is 50, X is 10, and I is 1. 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 numeral is placed after the larger numeral. For example, LXX → L + X + X → 50 + 10 + 10 = 70
To write a large number, there are certain Roman numerals that can be repeated three times. For example, XXX → 30.
If a smaller numeral is placed before a larger numeral, we subtract the smaller numeral from the larger numeral. For example, XL → L - X → 50 - 10 = 40
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 LL for 100; instead, we use C.
Let’s now learn how to write 471 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 471 in Roman numerals using the expansion method. To write 471 in Roman numerals, follow the steps:
Step 1: Break the number based on the place value. Place value that is ones, tens, hundreds, etc. For 471, we write it as 400 + 70 + 1
Step 2: Convert the number into Roman numerals 400 in Roman numeral - CD 70 in Roman numeral - LXX 1 in Roman numeral - I
Step 3: Combine the Roman numerals together. Therefore, 471 in Roman numerals is CD (400) + LXX (70) + I (1) = CDLXXI
When writing a large number into Roman numerals, we group the number. To write 471 in Roman numerals, we group 471 as 400 + 70 + 1
So, 471 is written as CDLXXI 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 CDLXXI and XXXIV.
The sum of CDLXXI and XXXIV is DV.
To find the sum, we add the two numbers together.
CDLXXI = 471
XXXIV = 34
471 + 34 = 505
505 in Roman Numerals can be written as DV.
A historian finds DCCXLVII ancient coins and wants to distribute them equally among CLVII collectors. How many coins will each collector receive?
Each collector will receive V coins.
To find out how many coins each collector receives, divide the total number of coins by the number of collectors.
DCCXLVII = 747
CLVII = 157
747 / 157 = 5
5 in Roman Numerals can be written as V.
A recipe requires CCCXV grams of flour and CLVI grams of sugar. What is the total weight in grams of flour and sugar needed?
The total weight of flour and sugar needed is CDLXXI grams.
To find the total weight, add the two quantities together.
CCCXV = 315
CLVI = 156
315 + 156 = 471
471 in Roman Numerals is CDLXXI.
What is the difference between DXX and CDLXXI?
The difference between DXX and CDLXXI is XLIX.
The difference is the result of subtracting one number from another.
DXX = 520
CDLXXI = 471
520 - 471 = 49
49 in Roman Numerals can be written as XLIX.
Express the Roman numeral equivalent of 471 using the subtraction method.
The Roman numeral for 471 using the subtraction method is CDLXXI.
To express 471 using Roman numerals with subtraction, first break it down:
471 = 500 - 100 + 50 + 20 + 1
Using Roman numerals, this is:
500 - 100 = CD
50 = L
20 = XX
1 = I
Combine them to get CDLXXI.
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.