Class 8 Maths

Rational Numbers

Chapter 1.1

Part 1

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Using appropriate properties find :

(i)  -2/3  x  3/5  + 5/2 - 3/5  x  1/6

(ii)  2/5  x [ -3/7 ] - 1/6  x  3/2  +  1/14  x  2/5 

Introduction

Welcome to an insightful journey into the world of mathematics with Soni Sir from lakshyaeducation.in. In this video series, we delve into Chapter 1.1 of Class 8 CBSE Maths, focusing on the intriguing topic of Rational Numbers. This particular article is centered around Part 1 of the series, where we explore the essential properties of rational numbers through practical problem-solving.

Unraveling the Equation Puzzle

Part 1: Multiplying and Adding Rational Numbers

In the first section of the video, Soni Sir takes us through the process of using appropriate properties to solve the equation:

• Multiply -2/3 by 3/5 to get the product of the first two terms.
• Multiply -3/5 by 1/6 to find the product of the last two terms.
• Add the product of the first two terms to 5/2.
• Subtract the product of the last two terms from the sum obtained in the previous step.

Part 2: The Complexity of Mixed Operations

Moving on to the second equation:

• Multiply 2/5 by the entire bracketed expression [-3/7].
• Multiply -1/6 by 3/2 and 1/14 by 2/5.
• Add the results obtained in the previous steps.

Understanding the Language of Mathematics

Soni Sir delivers this complex mathematical content in Hindi, but fear not, as the content language is English. This bilingual approach ensures that students can grasp the concepts effectively, even if Hindi is not their first language.

Conclusion

In conclusion, this video lecture serves as a valuable resource for Class 8 students and their parents, offering a clear understanding of rational numbers through practical problem-solving. The ability to break down complex equations into manageable steps is a crucial skill that students can develop through these lessons.

We encourage you to watch the full video to grasp these concepts fully. Soni Sir's engaging teaching style, coupled with real-world examples, makes learning mathematics not only educational but also enjoyable.

Feel free to leave your thoughts and questions in the comments section below. We'd love to hear about your experiences with understanding rational numbers in Class 8 mathematics!

Happy learning!

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