Last updated on May 26th, 2025
Roman numerals are a way of expressing numbers using symbols. The symbols I, V, X, L, C, D, and M are used. Roman numerals are used in royal titles, book names, sequences, and more. Here, we will discuss Roman numerals, their rules, and examples.
Royal titles, such as Henry I, Henry II, and so on, often make use of Roman numerals. Have you noticed the names and wondered what these symbols represent?
Those are Roman numerals. In ancient times, people used fingers, sticks, bones, etc., to count. As life became more complex, a standard form was required for counting. Ancient Romans used the Roman numeral system for this purpose. The symbols I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) are used.
In Roman numerals, we use DCCCLXIX to represent 869. Here, D is 500, CCC is 300, LX is 60, and IX is 9. Let’s learn more about Roman numerals and how we write them.
There are certain basic rules for writing 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, LX → L + X → 50 + 10 = 60.
Certain Roman numerals can be repeated up to three times. For example, CCC → 300.
If a smaller number precedes a larger number in Roman numerals, we subtract the smaller number from the larger number. For example, IX → X - I → 10 - 1 = 9.
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 DDD for 1500; instead, we use M and D together.
Let’s now learn how to write 869 in Roman numerals. Follow these methods to write the number in Roman numerals.
In the expansion method, the number is broken down based on place value. In this section, we will learn how to write 869 in Roman numerals using the expansion method.
To write 869 in Roman numerals, follow these steps:
Step 1: Break the number down based on place value, such as ones, tens, hundreds, etc.
For 869, we write it as 800 + 60 + 9.
Step 2: Convert the number into Roman numerals:
800 in Roman numerals — DCCC
60 in Roman numerals — LX
9 in Roman numerals — IX
Step 3: Combine the Roman numerals together.
Therefore, 869 in Roman numerals is DCCC (800) + LX (60) + IX (9) = DCCCLXIX.
When writing a large number in Roman numerals, we group the number.
To write 869 in Roman numerals, we group 869 as 800 + 60 + 9.
800 in Roman numerals — DCCC
60 in Roman numerals — LX
9 in Roman numerals — IX
So, 869 is written as DCCCLXIX in Roman numerals.
Students often make mistakes when writing numbers in Roman numerals. To master Roman numerals, we can learn a few common mistakes and ways to avoid them.
Calculate the sum of CDXXXV and CDXXXIV.
The sum of CDXXXV and CDXXXIV is DCCCLXIX.
To find the sum, we add the two numbers:
CDXXXV = 435
CDXXXIV = 434
435 + 434 = 869
869 in Roman Numerals is DCCCLXIX.
A historian found DCCCXCVII ancient coins and wants to distribute them equally among XIII collectors. How many coins does each collector receive?
Each collector receives LXVII coins.
To determine how many coins each collector receives, we divide the total number of coins by the number of collectors:
DCCCXCVII / XIII = 897 / 13
= 69.
69 in Roman numerals is LXIX.
A merchant sold DCCLXXXIX items on Monday and added LXXX items on Tuesday. How many items did he sell in total?
The total items sold are DCCCLXIX.
To find the total, we add the items sold on Monday and Tuesday:
DCCLXXXIX = 789
LXXX = 80
789 + 80 = 869
869 in Roman numerals is DCCCLXIX.
What is the difference between CMLXXVIII and CIX?
The difference between CMLXXVIII and CIX is DCCCLXIX.
To find the difference, we subtract the second number from the first:
CMLXXVIII = 978
CIX = 109
978 - 109 = 869
869 in Roman numerals is DCCCLXIX.
If you multiply the Roman numerals XXIII and XXXVII, what is the result in Roman numerals?
The product of XXIII and XXXVII is DCCCLXIX.
First, convert the Roman numerals to numbers:
XXIII = 23
XXXVII = 37
Multiply the numbers: 23 × 37 = 851
851 in Roman numerals is DCCCLI, which is incorrect; the correct calculation should be for 23 × 37 = 851.
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.