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Class 8 Maths

Rational Numbers

Chapter 1.1

Part 4


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Find the multiplicative inverse of the following : 

(i) -13

(ii) -13/19

(iii) 1/5

(iv)  -5/8 x -3/7

(v) -1  x 2/-15  

(vi) -1


Introduction

Welcome, students and parents, to an insightful exploration of Rational Numbers. In this video lecture from the Class 8 CBSE Maths series by Soni Sir on lakshyaeducation.in, we delve into Chapter 1.1, specifically focusing on Rational Numbers in Part 4. The language of instruction is Hindi, but worry not, as the content language is English, ensuring clarity for all.

Understanding Multiplicative Inverse

In this session, Soni Sir sheds light on finding the multiplicative inverse of various rational numbers. Let's break down the key points covered:

1. Multiplicative Inverse of -13

  • Explanation: Soni Sir walks us through the process of finding the multiplicative inverse of -13.
  • Application: Understanding how to handle negative integers in this context.

2. Multiplicative Inverse of -13/19

  • Insightful Approach: Soni Sir provides a step-by-step guide to determine the multiplicative inverse of the fraction -13/19.
  • Real-world Connection: Relating mathematical concepts to practical examples.

3. Multiplicative Inverse of 1/5

  • Simplicity at its Best: Exploring the simplicity of finding the multiplicative inverse for the straightforward fraction 1/5.
  • Building Foundations: Establishing a strong foundation in basic operations with fractions.

4. Multiplicative Inverse of -5/8 x -3/7

  • Chaining Multiplicative Inverses: Soni Sir demonstrates the process of finding the multiplicative inverse for a product of two rational numbers.
  • Complexity Unraveled: Breaking down complex expressions into manageable steps.

5. Multiplicative Inverse of -1 x 2/-15

  • Navigating Negatives: Understanding the intricacies of dealing with negative numbers in multiplication.
  • Practical Example: Applying the concept to a real-world scenario.

6. Multiplicative Inverse of -1

  • Special Case: Exploring the multiplicative inverse of -1 and its unique characteristics.
  • Concept Reinforcement: Reinforcing the fundamental principles through diverse examples.

Conclusion

In conclusion, Soni Sir's Class 8 CBSE Maths video lecture on Rational Numbers, Chapter 1.1, Part 4, provides a comprehensive understanding of finding the multiplicative inverse. Whether it's dealing with negative integers, fractions, or special cases like -1, this session equips students with the necessary tools to navigate the world of rational numbers.

We encourage you to watch the complete video on lakshyaeducation.in to grasp these concepts fully. If you found this article helpful or have any questions, feel free to leave a comment below. Happy learning!


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