Class 9 Maths Chapter 1 – Number System Exercise 1.1 (NCERT Solutions | Examples 1 & 2)

Class 9 Maths Chapter 1 – Number System Exercise 1.1

This page covers Exercise 1.1 of Class 9 Maths Chapter 1 – Number System based on the latest NCERT / CBSE syllabus. In this lesson, students will learn how to identify rational and irrational numbers and understand their properties with clear explanations.

We have also explained Example 1 and Example 2 step-by-step in English for better understanding.

📘 Topics Covered in Exercise 1.1

• Definition of Rational Numbers
• Definition of Irrational Numbers
• Identifying Rational and Irrational Numbers
• Decimal Expansion of Rational Numbers
• Terminating and Non-Terminating Decimals
• Solved NCERT Example 1
• Solved NCERT Example 2
• Complete Exercise 1.1 Solutions

🎯 What Students Will Learn

• How to express numbers in p/q form
• How to check whether a number is rational or irrational
• Understanding non-terminating recurring decimals
• Strong foundation for real numbers

This explanation is fully based on the latest CBSE Class 9 NCERT textbook and is designed for exam-oriented preparation.

Students are advised to practice all questions along with the video explanation for better conceptual clarity.