689 in Roman Numerals

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. When life became complex, a standard form was required to count.

Ancient Romans used the Roman Numeral system to count. The symbols are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). In Roman Numerals, we use DCLXXXIX to represent 689, where D is 500, C is 100, L is 50, XXX is 30 (10+10+10), 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. For example, VI → V + I → 5 + 1 = 6.

Rule 2: Repetition Method

To write a large number, certain Roman Numerals can be repeated up to three times. For example, XXX → 30 (X is repeated three times).

Rule 3: Subtraction Method

If a small number is followed by a large number in Roman Numerals, we subtract the smaller number from the larger number. 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, 10 is written as X, not VV.

Let’s now learn how to write 689 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 689 in Roman numerals using the expansion method. To write 689 in Roman Numerals, follow the steps:

Step 1: Break the number based on place value. Place values are ones, tens, hundreds, etc. For 689, we write it as 500 + 100 + 50 + 30 + 9.

Step 2: Converting each number into Roman Numerals:

• 500 in Roman Numerals - D
   
• 100 in Roman Numerals - C
   
• 50 in Roman Numerals - L
   
• 30 in Roman Numerals - XXX
   
• 9 in Roman Numerals - IX
   

Step 3: Combine the Roman Numerals together: Therefore, 689 in Roman Numerals is DCLXXXIX.

When writing a large number into Roman Numerals, we group the number. To write 689 in Roman Numerals, we group 689 as 500 + 100 + 50 + 30 + 9.

• 500 in Roman Numerals - D
   
• 100 in Roman Numerals - C
   
• 50 in Roman Numerals - L
   
• 30 in Roman Numerals - XXX
   
• 9 in Roman Numerals - IX

So, 689 is written as DCLXXXIX 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 689.

• Addition rule: The addition method is used when a large number is followed by a smaller numeral, and the values are added. For example, DCLXXXIX = D + C + L + XXX + IX = 689.
   
• Grouping method: Here, the given numbers are grouped based on their place value, and then we convert each group into its Roman numerals. For example, 689 = 500 + 100 + 50 + 30 + 9 = DCLXXXIX.
   
• Repetition rule: Certain symbols (I, X, C, M) in the Roman numeric system can be repeated only up to three times. For example, XXX = 30 (X is repeated three times to represent the number 30).
   
• Subtraction rule: This method involves subtracting a smaller numeral that precedes a larger numeral. For example, IX = 10 - 1 = 9.
   
• Limitation rule: Symbols like V, L, and D cannot be repeated. For example, 10 is written as X, not VV.