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.

Key Insights

• ⬛ The repeated subtraction method is a simple option for finding square roots but is not favorable for large numbers.
• #️⃣ The method involves subtracting odd numbers from the given number until the result becomes 0.
• ❎ Square roots can be found using this method, but it only works for perfect square numbers.
• 🫚 The repeated subtraction method is based on the relationship between square roots and squaring.
• 🌥️ This method requires multiple steps, making it less efficient for larger numbers.
• ⬛ Alternative methods are needed to find the square root of large numbers.
• 🫚 The repeated subtraction method can be useful for understanding the concept of square roots.

Transcript

hello friends this video on question square root 517 is brought to you by example.com no more your thumb exam so that now next question that comes to your mind is how do we find square root of a number that it seems to be a big challenge that finding squares makes it easier because we only have to multiply even if we go by the actual multiplication... Read More

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.