9 in Roman Numerals

Introduction

9 in Roman numerals is written as IX. Roman numerals are an old number system that uses letters from the Latin alphabet to show numbers. Each letter has a fixed value, such as I = 1, V = 5, and X = 10.

To make 9, we write it as IX, which means 1(I) less than 10(X). Instead of writing 5 + 4 (VIIII), the Romans used subtraction and wrote it simply as IX.

Roman numerals were used in ancient Rome for trade, counting, and naming important events. Even today, we see them on clocks, book chapters, movie titles and documents.

 

Table of Contents

• How to Write 9 in Roman Numerals?
• Numbers Related to 9 in Roman Numerals
• Solved Examples
• Practice Questions
• Conclusion
• FAQs on 9 in Roman Numerals

 

How to Write 9 in Roman Numerals?

Roman numerals are an ancient way of writing numbers using letters. They were used a long time ago in Rome for counting, writing dates, and numbering things like clocks. Each letter has a specific value:

• I = 1

• V = 5

• X = 10

• L = 50 

• C = 100

• D = 500

• M = 1000

To write 9 in Roman numerals, we use letters I and X. Here's how it works:

• When a smaller number comes before a bigger number, we subtract it.

• When a smaller number comes after a bigger number, we add it.

Since 1(I) comes before 10(X) in IX, we subtract 1 from 10. so: IX = 10 - 1 = 9

 

Numbers Related to 9 in Roman Numerals

Some of the Roman numerals related to 9 are as follows:

 

Solved Examples

Example 1: Write 9 in Roman numerals.

Solution: 

• We know that 10 in Roman numerals is X and 1 is I.

• Since 1 comes before 10, we subtract it: 10 – 1 = 9.

• As 9 in Roman numerals is IX

• Therefore, 9 = IX

 

Example 2: Write 19 in Roman numerals.

Solution: 

• We know that 10 in Roman numerals is X and 9 is IX

• So, 10 + 9 = 19

• As 19 in Roman numerals is XIX

• Therefore, 19 = XIX

 

Example 3: Write 49 in Roman numerals.

Solution: 

• We know that 40 is written as XL and 9 is IX

• So, 40 + 9 = 49

• As 49 Roman numerals is XLIX

• Therefore, 49 = XLIX

 

Example 4: Write 59 in Roman numerals.

Solution: 

• Identify the value :59

• Split into tens and units: 50 + 9

• Write 50 = L

• Write 9 = IX

• Then combine : L + IX

• Therefore, 59 = LIX

 

Practice Questions

1. Write 69 in Roman numerals.

2. Write 14 in Roman numerals.

3. Write 89 in Roman numerals.

4. Write 39 in Roman numerals.

5. Write 109 in Roman numerals.
   
   

Conclusion

The number 9 in Roman numerals is written as 'IX', which shows the subtraction rule where 1 (I) comes before 10 (x). This system makes Roman numerals simpler and shorter instead of writing repeated symbols such as VIIIII. Learning Roman numbers helps us understand history, old traditions and even modern uses such as clocks and book chapters. By practising numbers related to IX, students can easily master this ancient number system and can use it in everyday life.

 

Frequently Asked Questions on 9 in Roman Numerals

1. How do you write 9 in Roman numerals?

Answer: 9 is written as IX. Here I (1) come before x (10), so we subtract 1 from 10 → 10 – 1 = 9.

 

2. Why is 9 written as IX and not VIIII?

Answer: In Roman numerals, putting a smaller number before a bigger number means 'subtract'. So IX is correct instead of VIII.

 

3. Which numbers are related to 9 in Roman numerals?

Answer: Numbers like 19 (XIX), 29 (XXIX), 39 (XXXIX), 49 (XLIX) and 59 (LIX) all include the number 9 (IX).

 

4. How do you add numbers with 9 in Roman numerals?

Answer: Converts first Roman numerals to numbers, adds them and then converts back.

Example: IX + V → 9 + 5 = 14 → XIV

 

5. How do you subtract the number by 9 in Roman numerals?

Answer: Converts first Roman numerals to numbers, subtracts them and then converts them back.

Example: XIX – IX → 19 – 9 = 10 → X