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.

Conclusion

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