How to Find a Square Root of a Number Elementary Style

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Finding a square root of a number is very easy and doesn't even require a calculator so long as you remember a few basic tips. Find the square root of a number with help from an expert in computers, with two degrees in both Computer Science and Applied Mathematics, in this free video clip.

Part of the Video Series: Applied Mathematics
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Video Transcript

Hi, my name is Stefan. I'm a math professional, and today I'm going to be speaking on how to find the square root of a number in the elementary level. Now the square root of a number is a number that when you multiply it by itself, you get that number like the square root of 64, that's 8 because 8 x 8 is equivalent to 64. Now, let's say we're trying to find the square root of 16. Okay we could try a number like 2, 2 x 2 is equivalent to 4, so that's too low. Okay let's throw in another number like 6 but we'll multiply 6 x 6, you get 36. So now we have our upper limit and our lower limit so we know that the square root has to be in between 2 and 6. So let's throw in, let's try a 4, so 4 x 4 is equivalent to 16, good. And we have our answer. So when trying to figure out a square root it's good to find a lower limit and then an upper limit and then you can just work inward to find the exact answer. And that's how you find the square root.


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