Squaring Integers Ending in 5

by Beat The GMAT, Aug 17, 2010

[youtube]http://www.youtube.com/watch?v=hBnORYlv3RM[/youtube]

Quick, what is the value of [pmath]25^2[/pmath]? What about of [pmath]45^2[/pmath] or [pmath]75^2[/pmath]?

Can you evaluate these in your head? In under 5 seconds? In this short video, well examine a quick way to square integers ending in 5. This technique can come in handy when tackling a variety of GMAT questions, so be sure to learn it.

You see other great tips like this in the video explanations available for all Beat The GMAT Practice Questions.