789 in Roman Numerals

Roman numerals are an ancient numbering system used by the Romans. They used symbols like I (1), V (5), X (10), L (50), C (100), D (500), and M (1000) to represent numbers.

For 789, we use DCCLXXXIX, where D is 500, CC is 200, L is 50, XXX is 30, and IX is 9. 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 a smaller number is placed after a larger number, then it is the addition method. For example, VIII → V + III → 5 + 3 = 8

Rule 2: Repetition Method

To write a large number, there are certain Roman Numerals that can be repeated three times. III → 3.

Rule 3: Subtraction Method

If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the large number. This is the subtraction method. 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 8 is written as VIII, not IIIIIIII.

Let’s now learn how to write 789 in Roman Numerals. Follow these methods to write the number in Roman Numerals.

• By Expansion Method
• By Grouping Method

In the expansion method, based on the place value, the number is broken down. In this section, we will learn how to write 789 in Roman numerals using the expansion method. To write 789 in Roman Numerals, follow the steps,

Step 1: Break the number based on the place value. Place value includes ones, tens, hundreds, etc. For 789, we write it as 700 + 80 + 9

Step 2: Converting the number into Roman Numerals

700 in Roman Numerals - DCC

80 in Roman Numerals - LXXX

9 in Roman Numerals - IX

Step 3: Combine the Roman Numerals together. Therefore, 789 in Roman Numerals is DCC (700) + LXXX (80) + IX (9) = DCCLXXXIX

When writing a large number into Roman Numerals, we group the number. To write 789 in Roman Numerals, we group 789 as 700 + 80 + 9

• 700 in Roman Numerals - DCC

• 80 in Roman Numerals - LXXX

• 9 in Roman Numerals - IX

So, 789 is written as DCCLXXXIX in Roman Numerals.

Roman Numerals follow a certain pattern, making them look similar. In this section, we will learn some numbers related to the Roman numeral 789. 

• Addition rule: The addition method is used when a large numeral is followed by a smaller numeral, and the values are added. For example, DCC = D + CC = 500 + 200 = 700.

• Grouping method: Here, the given numbers are grouped based on their place value and then converted into their Roman numerals. For example, 789 = 700 + 80 + 9 = DCCLXXXIX.

• Repetition rule: Certain symbols (I, X, C, M) in the Roman numeral system can be repeated only up to three times. For example, XXX = 30 (X is repeated three times).

• Subtraction rule: The subtraction method is used when a smaller numeral precedes a larger numeral, and the smaller is subtracted from the larger. For example, IX = X - I = 10 - 1 = 9.

• Limitation rule: Some symbols like V, L, D cannot be repeated in Roman numerals.