How to square any numbers in your head – fast mental math trick Interesting Video

How to square any numbers in your head – fast mental math trick is interesting because math is easy and funny, make we laugh and clever in same time. In this chapter we will learn a little bit about How to square any numbers in your head – fast mental math trick

Description

Learn how you can square large numbers in your head – instantly! This easy to learn technique will have you calculating the square of numbers up to 100 – without the need for a calculator.
The trick is easy – first we find the distance from the number being squared to the nearest tens number. Say for example we are trying to find the square of 23 – the nearest tens number is 20, which is 3 away from 23. So 3 is our result!
We use this number to find the square – by taking this number from the number being squared (23 – 3 = 20) and then adding this number to the number being squared (23 + 3 = 26). We easily multiply these two numbers (20 x 26 = 520).
To this we add our distance number squared (3 x 3 = 9). So we add 9 to 520…our answer is 529.
Love the math!
The old math is dead! Long live the math!

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This video has been watched 3M views since Published on Feb 21, 2014 until 09-02-2018 04:53:24 and still continue. Duration 5:24 minutes.

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