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RD Sharma Class 9 Solutions Chapter 1 - Number System (Ex 1.2) Exercise 1.2 - Free PDF

Last updated date: 16th May 2024
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Introduction to Class 9 Solutions Chapter 1- Number System (Ex 1.2) Exercise 1.2 - Free PDF

Free PDF download of RD Sharma Class 9 Solutions Chapter 1 - Number System Exercise 1.2 solved by expert mathematics teachers on Vedantu is created for students to prepare easily. All Chapter 1 - Number System Ex 1.2 Questions with Solutions for RD Sharma Class 9 Maths to help you to revise the complete Syllabus and Score More marks. Register for online coaching for IIT JEE (Mains & Advanced) and other engineering entrance exams.

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About RD Sharma Class 9 Solutions Chapter 1 - Number System (Ex 1.2) Exercise 1.2 - Free PDF

Number System is the very first chapter in the Class 9 maths textbook. In this chapter, students are introduced to various topics and subtopics that are important to those who want to pursue maths in higher studies as well. This chapter covers everything starting from the number line to different kinds of numbers that are represented on it such as natural numbers, whole numbers, integers and rational numbers. Students will learn about these numbers and their representation on the number line. Next in line are topics on irrational numbers and real numbers.

Students are introduced to Natural numbers and whole numbers (these are natural numbers along with 0) then they are introduced to integers and after that rational numbers and irrational numbers come in line. Students learn that rational numbers are those numbers that can be expressed in the form of (p/q) where p and q are integers and q is not equal to 0 and irrational numbers are those numbers that cannot be expressed in the form of (p/q). 

Further in the chapter students learn about real numbers and decimal expression of real numbers and check if it helps while differentiating between rational and irrational numbers. After this students learn to represent real numbers on the number line. Next, students are introduced to mathematical operations like addition, subtraction, division and multiplication or irrational numbers. In the final section, students learn about the law of exponents for real numbers. 

Advantages of Referring to RD Sharma Class 9 Solutions Chapter 1 - Number System (Ex 1.2) Exercise 1.2 - Free PDF:

Dr Ravi Dutt Sharma, also known as R. D. Sharma, is an Indian author and mathematics teacher who has authored many reference books of which most of which are designed for CBSE Examinations. Currently, he is serving as the Vice-principal and Head of the Department of Science and Humanities at the Delhi government's Guru Nanak Dev Institute of Technology. 

RD Sharma is a very interactive book as it tries to include every possible aspect of the subject so that the student can practice a lot and understand the chapter completely.

He understands the psychology of the students very well and the book is designed keeping in mind the needs of class 9 students for a better understanding of the subject. Some of the advantages are-

  • RD Sharma contains well-designed illustrations that make the textbook very interesting to study 

  • The book contains numerous questions along with solved examples that solidify the concept in a student’s mind and add to their better understanding.

  • The book offers loads of practice to the students as there is an exercise after with different types of questions for every section in the chapter.

  • The book is designed by a subject matter expert and is carefully researched.

  • The book is very easy to follow. Each concept is explained in detail, followed by solved examples and exercises.

  • The book strictly follows the syllabus of the education board.

  • The book covers everything for class 9 exams and can also be referred for JEE and other entrance exams.

  • The book is very helpful for revision purposes.


Using Vedantu website to prepare for the class 9 solutions Chapter 1- Number System can help to understand from the subject experts.

FAQs on RD Sharma Class 9 Solutions Chapter 1 - Number System (Ex 1.2) Exercise 1.2 - Free PDF

1. What is the difference between Natural and Whole numbers according to RD Sharma Class 9 Chapter 1 solutions?

According to the solutions of Class 9 RD Sharma Natural numbers are positive integers (1, 2, 3…) etc. These numbers are primarily used for counting and ordering in our day to day lives. The only difference between natural and whole numbers is that whole numbers also contain 0 along with all the natural numbers. So whole numbers are as follows 0, 1, 2, 3 etc.

2. About class 9 RD Sharma Chapter 1, What are rational numbers?

Regarding class 9 RD Sharma, Rational numbers are those numbers that can be represented in the form of expression ‘p/q’ where p and q are integers and q is not equal to 0. For example, 15 and -32 are rational numbers because there is more than one way to write the same number as the ratio of integers i.e 15/1 and -32/1. On the other hand, irrational numbers are those numbers that cannot be written in the form of p/q.

3. Where can I find useful study resources for class 9 maths?

The Vedantu website and app is a good place to start your academic session that will help students in preparing the chapter. The content available on this platform is created by professionals in the field and is very accurate and reliable. Students can find study material, revision notes, important questions, question papers, and a whole lot more! The study material on the website is completely free and there is no cost involved. All students have to do is sign in and then you will be able to download the pdf as per your requirement. You can take advantage of these free resources that will surely help you become more efficient in the preparation for your exams.

4. Why is studying from the RD Sharma book essential for class 9?

RD Sharma is a very interactive and well-designed book. It follows the latest CBSE syllabus. Hence, the book is very helpful in preparing for class 9 exams. It explains concepts in a clear, uncomplicated and concise manner. It is the best book if your fundamentals are clear and you want to take it to the next level. It has numerous solved examples and exercises that add to a student’s learning. It covers everything that can be asked in the Class 9 examination. Hence, students are advised to study from this book.

5. Is it necessary to solve all the chapter exercises given in RD Sharma?

As we all know practice makes a man perfect, so It is always better to solve all the chapter exercises as it leads to more and more practice. Maths is not a subject that we can just read or memorize and write solutions to in exams for that we need solid foundations and understanding of the topic. It requires hard work and practice. RD Sharma has examples and exercises after every section. After going through each section, go through the solved examples and understand them completely. Then move on to the exercises and try to solve them. There are chances of the same questions coming in the examination so students are advised to practice the sums in the exercises well to ace the exams.