Read and download NCERT Class 8 Maths Rational Numbers in NCERT book for Class 8 Mathematics. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Mathematics textbook for Class 8 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 8 Mathematics to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 8 Mathematics Chapter 1 Rational Numbers
Class 8 Mathematics students should refer to the following NCERT Book Chapter 1 Rational Numbers in Class 8. This NCERT Book for Class 8 Mathematics will be very useful for exams and help you to score good marks
Chapter 1 Rational Numbers NCERT Book Class 8
1.1 Introduction
In Mathematics, we frequently come across simple equations to be solved. For example, the equation x + 2 = 13 (1)
is solved when x = 11, because this value of x satisfies the given equation. The solution 11 is a natural number. On the other hand, for the equation
x + 5 = 5 (2)
the solution gives the whole number 0 (zero). If we consider only natural numbers, equation (2) cannot be solved. To solve equations like (2), we added the number zero to the collection of natural numbers and obtained the whole numbers. Even whole numbers will not be sufficient to solve equations of type
x + 18 = 5 (3)
Do you see ‘why’? We require the number –13 which is not a whole number. This led us to think of integers, (positive and negative). Note that the positive integers correspond to natural numbers. One may think that we have enough numbers to solve all simple equations with the available list of integers. Now consider the equations
2x = 3 (4)
5x + 7 = 0 (5)
for which we cannot find a solution from the integers. (Check this) We need the numbers 3/2 to solve equation (4) and 7/5 to solve equation (5). This leads us to the collection of rational numbers.
We have already seen basic operations on rational numbers. We now try to explore some properties of operations on the different types of numbers seen so far.
Please refer to attached file for NCERT Class 8 Maths Rational Numbers
NCERT Class 8 Maths Rational Numbers |
NCERT Class 8 Maths Linear Equations in One Variable |
NCERT Class 8 Maths Understanding Quadrilaterals |
NCERT Class 8 Maths Practical Geometry |
NCERT Class 8 Maths Data Handling |
NCERT Class 8 Maths Squares and Square Roots |
NCERT Class 8 Maths Cubes and Cube Roots |
NCERT Class 8 Maths Comparing Quantities |
NCERT Class 8 Maths Algebraic Expressions and Identities |
NCERT Class 8 Maths Visualising Solid Shapes |
NCERT Class 8 Maths Mensuration |
NCERT Class 8 Maths Exponents and Powers |
NCERT Class 8 Maths Direct and Inverse Proportions |
NCERT Class 8 Maths Factorisation |
NCERT Class 8 Maths Introduction to Graphs |
NCERT Class 8 Maths Playing with Numbers |
NCERT Class 8 Maths Answers and Solutions |
NCERT Book Class 8 Mathematics Chapter 1 Rational Numbers
The above NCERT Books for Class 8 Mathematics Chapter 1 Rational Numbers have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 1 Rational Numbers Mathematics Class 8 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 1 Rational Numbers NCERT etextbooks as the exams for Class 8 Mathematics are always asked as per the syllabus defined in these ebooks. These Class 8 Chapter 1 Rational Numbers book for Mathematics also includes collection of question. Along with Mathematics Class 8 NCERT Book in Pdf for Chapter 1 Rational Numbers we have provided all NCERT Books in English Medium for Class 8 which will be really helpful for students who have opted for english language as a medium. Class 8 students will need their books in English so we have provided them here for all subjects in Class 8.
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