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### Course: Middle school math (India)>Unit 6

Lesson 2: Square roots

# Square roots by division method visualised

Let's understand why the square root by division method (digit by digit method) works.

## Want to join the conversation?

• Who made this video? it's nice.
• So how do I do this with a number that is not a perfect square? Such as 556?
• sir i have a basic question ,hope u can answer it..why do we need to convert a quadratic equation to zero?to get zeros,roots and like these..but what is the need or what is the use of finding roots and zeros of it?
• We find the zeros and such for a quadratic because that gives us the tools to start solving polynomial equations in general which come up a lot in science and math- and knowing how to solve a quadratic is very useful in solving such questions which can also be used to model real life phenomena.
• at why did he say that "I shouldn't use =" I did not get that part when we subtracted 4096 - 3600 we got 496 isn't that that the exact area of the "remaining area"
• sir, why is it 2x60x? instead of 2(60x?) since there are 2 of 60x?
• Actually it makes no difference. Both of the values are equal.It is because of the associative property. Like, 2x60x?=2(60x?).
Hopefully it makes sense!
• Ooh sir, thank you for making this video.