NCERT solutions class 9 maths chapter 1 â€“ Number Systems are provided here. These NCERT solutions are created by the BYJUâ€™S expert faculties to help students in the preparation of their board exams. These expert faculties solve and provide the NCERT maths solution so that it should help students to solve the problems comfortably. They also concentrate on making the solutions in such a way that it is easy to understand for the students. They give a detailed and stepwise explanation of each answer to the questions given in the exercises in the NCERT textbook for class 9.

In CBSE class 9 Number Systems chapter, students are introduced to a lot of important topics which will be helpful for those who wish to pursue mathematics as a subject in further classes. Based on these NCERT solutions, students can prepare for their upcoming Board Exams. These solutions are helpful as the syllabus covered here follows NCERT guidelines.

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## NCERT Solutions for class 9 Maths Chapter 1- Number Systems

As this is one of the important topics in maths, It has a weightage of 6 marks in class 9 (Number system â€“ Number Systems) maths board exams. On an average three questions are asked from this unit.

- One out of three questions in part A (1 marks).
- One out of three questions in part B (2 marks).
- One out of three questions in part C (3 marks).

This chapter talks about

- Introduction of Number Systems
- Irrational Numbers
- Real Numbers and their Decimal Expansions
- Representing Real Numbers on the Number Line.
- Operations on Real Numbers
- Laws of Exponents for Real Numbers
- Summary

List of Exercises

Exercise 1.1 Solutions 4 Questions ( 2 long, 2 short)

Exercise 1.2 Solutions 4 Questions ( 3 long, 1 short)

Exercise 1.3 Solutions 9 Questions ( 9 long)

Exercise 1.4 Solutions 2 Questions ( 2 long)

Exercise 1.5 Solutions 5 Questions ( 4 long 1 short)

Exercise 1.6 Solutions 3 Questions ( 3 long)

## NCERT Solutions for class 9 Maths Chapter 1- Number Systems

NCERT solutions for class 9 maths chapter 1 â€“ Number System is the first chapter of class 9 Maths. Number System is introduced in class 9 and is discussed in detail. The chapter discusses the Number Systems and their applications. The introduction of the chapter includes whole numbers, integers and rational numbers.

The chapter starts with the introduction of Number Systems in section 1.1 followed by two very important topics in section 1.2 and 1.3

- Irrational Numbers â€“ The numbers which canâ€™t be written in the form of p/q.
- Real Numbers and their Decimal Expansions â€“ Here you study the decimal expansions of real numbers and see whether it can help in distinguishing between rational and irrationals.

Next, it discusses the following topics.

- Representing Real Numbers on the Number Line â€“ In this the solutions for 2 problems in Exercise 1.4.
- Operations on Real Numbers â€“ Here you explore some of the operations like addition, subtraction, multiplication and division on the irrational numbers.
- Laws of Exponents for Real Numbers â€“ Use these laws of exponents to solve the questions.

### Key advantages of NCERT Solutions for class 9 Maths Chapter 1- Number Systems

- These NCERT Solutions for class 9 Maths helps you solve and revise the whole syllabus of class 9.
- After going through the stepwise solutions given by our subject expert teachers, you will be able to score more marks.
- It follows NCERT guidelines which help in preparing the students accordingly.
- It contains all the important questions from the examination point of view.
- It helps in scoring well in maths in board exams.