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. Have you noticed the names and wondered what these symbols (I and II) represented? Those are the Roman Numerals.
Earlier people used to count using fingers, sticks, bones, etc. to count earlier. 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 DCCLXXXVI to represent 786, here D is 500, CC is 200, L is 50, 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, then it is the addition method. For example, VI → V + I → 5 + 1 = 6
To write a large number, there are certain Roman Numerals that can be repeated up to three times. III → 3.
If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number. It is a subtraction method. 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. Similarly, for 8, we write VIII, not IIIIIIII.
Let’s now learn how to write 786 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 786 in Roman numerals using the expansion method. To write 786 in Roman Numerals, follow the steps:
Step 1: The number is broken down based on the place value. Place values are ones, tens, hundreds, etc. For 786, we write it as 700 + 80 + 6
Step 2: Converting the numbers into Roman Numerals:
Step 3: Combining the Roman Numerals together: Therefore, 786 in Roman Numerals is DCC (700) + LXXX (80) + VI (6) = DCCLXXXVI
When writing a large number into Roman Numerals, we group the numbers. To write 786 in Roman Numerals, we group 786 as 700 + 80 + 6
So, 786 is written as DCCLXXXVI 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 DCCLXXX and VI.
The sum of DCCLXXX and VI is DCCLXXXVI.
To find the sum of two numbers, we add them together.
DCCLXXX = 780
VI = 6
780 + 6 = 786
786 in Roman Numerals is written as DCCLXXXVI.
A historian found a document stating a king ruled for DCC years and his son ruled for LXXXVI years. What was the total length of their reigns?
The total length of their reigns is DCCLXXXVI years.
To find the total reign, we add the reigns of the king and his son.
DCC = 700
LXXXVI = 86
700 + 86 = 786
786 in Roman Numerals is written as DCCLXXXVI.
A museum has a collection of DCCXC artifacts, and plans to add a collection of IX more. How many artifacts will the museum have in total?
The museum will have DCCLXXXVI artifacts in total.
To find the total number of artifacts, we add the current collection to the new collection.
DCCXC = 790
IX = 9
790 + 9 = 786
786 in Roman Numerals is written as DCCLXXXVI.
A marathon runner completed a distance of DCCL miles and has LXXXVI miles remaining. What is the total distance of the marathon?
The total distance of the marathon is DCCLXXXVI miles.
To find the total distance, we add the completed distance to the remaining distance.
DCCL = 750
LXXXVI = 86
750 + 86 = 786
786 in Roman Numerals is written as DCCLXXXVI.
Convert the sum of CDLXX and CCCXVI to Roman numerals using the expansion method.
The Roman numeral for the sum is DCCLXXXVI.
Step 1: Convert the numbers 470 and 316 into Roman numerals.
CDLXX = 470
CCCXVI = 316
Add the numbers together: 470 + 316 = 786
Using the expansion method: 786 = 700 + 80 + 6 = DCCLXXXVI.
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.