Question

How to calculate roots of a number soon with some technics.??

Answer 1

you can calculate roots of any number by long division method....

Answer 2

Here is the tip for you
See down


what is square root of 20?

You can start out by noting that since √16 = 4 and √25 = 5, then √20 must be between 4 and 5.

Then make a guess for √20; let's say for example that it is 4.5. Square that, see if the result is over or under 20, and improve your guess based on that. Repeat this process until you have the desired accuracy (amount of decimals). It's that simple and can be a nice experiment for students!

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