NCERT Class 8 Maths Direct and Inverse Proportions

Read and download NCERT Class 8 Maths Direct and Inverse Proportions 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 13 Direct and Inverse Proportions

Class 8 Mathematics students should refer to the following NCERT Book Chapter 13 Direct and Inverse Proportions in Class 8. This NCERT Book for Class 8 Mathematics will be very useful for exams and help you to score good marks

Chapter 13 Direct and Inverse Proportions NCERT Book Class 8

 

13.1 Introduction
Mohan prepares tea for himself and his sister. He uses 300 mL of water, 2 spoons of sugar, 1 spoon of tea leaves and 50 mL of milk. How much quantity of each item will he need, if he has to make tea for five persons?

NCERT Class 8 Maths Direct and Inverse Proportions

If two students take 20 minutes to arrange chairs for an assembly, then how much time would five students take to do the same job? We come across many such situations in our day-to-day life, where we need to see variation in one quantity bringing in variation in the other quantity.

For example:
(i) If the number of articles purchased increases, the total cost also increases.
(ii) More the money deposited in a bank, more is the interest earned.
(iii) As the speed of a vehicle increases, the time taken to cover the same distance decreases.
(iv) For a given job, more the number of workers, less will be the time taken to complete the work.

Observe that change in one quantity leads to change in the other quantity. Write five more such situations where change in one quantity leads to change in another quantity.

How do we find out the quantity of each item needed by Mohan? Or, the time five students take to complete the job?

To answer such questions, we now study some concepts of variation.

13.2 Direct Proportion If the cost of 1 kg of sugar is ` 36, then what would be the cost of 3 kg sugar? It is ` 108.

Please refer to attached file for NCERT Class 8 Maths Direct and Inverse Proportions

Chapter 01 Rational Numbers
NCERT Class 8 Maths Rational Numbers
Chapter 02 Linear Equations in One Variable
NCERT Class 8 Maths Linear Equations in One Variable
Chapter 03 Understanding Quadrilaterals
NCERT Class 8 Maths Understanding Quadrilaterals
Chapter 04 Practical Geometry
NCERT Class 8 Maths Practical Geometry
Chapter 05 Data Handling
NCERT Class 8 Maths Data Handling
Chapter 06 Squares and Square Roots
NCERT Class 8 Maths Squares and Square Roots
Chapter 07 Cubes and Cube Roots
NCERT Class 8 Maths Cubes and Cube Roots
Chapter 08 Comparing Quantities
NCERT Class 8 Maths Comparing Quantities
Chapter 09 Algebraic Expressions and Identities
NCERT Class 8 Maths Algebraic Expressions and Identities
Chapter 10 Visualising Solid Shapes
NCERT Class 8 Maths Visualising Solid Shapes
Chapter 11 Mensuration
NCERT Class 8 Maths Mensuration
Chapter 12 Exponents and Powers
NCERT Class 8 Maths Exponents and Powers
Chapter 13 Direct and Inverse Proportions
NCERT Class 8 Maths Direct and Inverse Proportions
Chapter 14 Factorisation
NCERT Class 8 Maths Factorisation
Chapter 15 Introduction to Graphs
NCERT Class 8 Maths Introduction to Graphs
Chapter 16 Playing with Numbers
NCERT Class 8 Maths Playing with Numbers

NCERT Book Class 8 Mathematics Chapter 13 Direct and Inverse Proportions

The above NCERT Books for Class 8 Mathematics Chapter 13 Direct and Inverse Proportions have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 13 Direct and Inverse Proportions 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 13 Direct and Inverse Proportions NCERT etextbooks as the exams for Class 8 Mathematics are always asked as per the syllabus defined in these ebooks. These Class 8 Chapter 13 Direct and Inverse Proportions book for Mathematics also includes collection of question. Along with Mathematics Class 8 NCERT Book in Pdf for Chapter 13 Direct and Inverse Proportions 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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