Maths Square and Square Roots part 17 (Repeated Subtraction Method) CBSE Class 8 Mathematics VIII | Summary and Q&A

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January 26, 2017
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Maths Square and Square Roots part 17 (Repeated Subtraction Method) CBSE Class 8 Mathematics VIII

TL;DR

This video explains how to find square roots using the repeated subtraction method and discusses its limitations.

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Questions & Answers

Q: What is the repeated subtraction method for finding square roots?

The repeated subtraction method involves subtracting odd numbers sequentially from the given number until the result becomes 0. It is used to find the square root of perfect square numbers.

Q: Is the repeated subtraction method suitable for finding the square root of large numbers?

No, the repeated subtraction method is not suitable for finding the square root of large numbers. It requires multiple steps, making it inefficient and time-consuming.

Q: How does the repeated subtraction method relate to square roots?

The repeated subtraction method is based on the fact that the square root is the inverse function of squaring. It uses the concept of adding or subtracting odd numbers to find square roots or square numbers, respectively.

Q: What are the limitations of the repeated subtraction method?

The repeated subtraction method is not suitable for large numbers due to the large number of steps involved. It becomes increasingly time-consuming as the number gets larger.

Summary & Key Takeaways

  • The video introduces the repeated subtraction method as a simple option for finding square roots but states that it is not suitable for large numbers.

  • It explains that the method involves subtracting odd numbers from the given number until the result becomes 0.

  • The video highlights that this method works only for perfect square numbers and provides an example of finding the square root of 25 in five steps.

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