Tip#1: Find the square of any number ending with 5.

Posted: April 9, 2012 by vedicmathforkids in Tips and Tricks
Today’s tutorial involves finding the square of ANY number ending in “5”.
For example, 752 = 5625.
So how do you  getthis? (By the way, if you came here ready with a calculator, throw it out the window, because as far as Vedic math is concerned, a calculator = cheating! If you came with pencil and paper, keep it for the first few, and then throw them out the window too. These tips are supposed to make math easy, so easy that you can do it mentally and not break a sweat!)
Alright, since the last digit is 5, the answer always includes 25. If you haven’t noticed this, the square of 15 is 225. It has a 25 in it. The square of 25 is 625. It too has a 25 in it.
So write down 25 in your nice little blank. Now comes the first part.
Take the rest of the number that doesn’t include the 5 you handled with the 25 a few moments ago. Find the number one more than it. In other words, add 1 to it. Now take this new number and multiply it by the old number (the number you added 1 to to get the new number). In other words, you are squaring a number, then adding the number to the result. Try it with the square of 75.
Comments
  1. WhatsHerName123 says:

    The initial music intro part is too long. I am one of those people who want to see actual content when I click on a link. (I hate it when youtube plays you a stupid commercial before it actually gives you the content), Try to cut it short. a sec or two, not more than that.