Macmillan Holdings, LLC. mathdude, QDnow, and Quick and Dirty Tips are trademarks of Macmillan Holdings, LLC. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head. Timbo sampleCategory I'm taking a math proficiency exam this morning for college. (arithmatic actually). I'm 60 years old and wish Jason had been my math teacher. 15 minutes after reading the material...I get it! I'll let you know how I do. http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=61677#Comments http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=61677#Comments Mon, 06 May 2013 12:27:47 GMT Sherry sampleCategory Thanks Jason, your tips have been quick, dirty and helpful! The other comment from Andy was also helpful. http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=60630#Comments http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=60630#Comments Wed, 03 Apr 2013 15:01:02 GMT John Clarke sampleCategory I love numbers and maths but I have never heard about switching numbers around to find percentages more easily. Will sign up to the podcast http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=59295#Comments http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=59295#Comments Sun, 03 Mar 2013 16:51:03 GMT Nelson sampleCategory Just for the record, 5 is NOT 17% of 85. It's 5.882%. http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=59129#Comments http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=59129#Comments Thu, 28 Feb 2013 12:56:14 GMT Constantine sampleCategory Thx for the article. http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=59118#Comments http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=59118#Comments Thu, 28 Feb 2013 04:35:09 GMT andy sampleCategory It's a lot easier than all that. Just multiply the two numbers: 36 x 25 = 900. move the decimal over two spots and NINE. This method also gives you the answer to problems like: what percent of 85 is 5? Just divide 85 by 5 to get 17. 17 x 5 = 85. Also 5 is what percent of 85? 17 (you knew that!) So 4 answers from one method. http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=55310#Comments http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx?commentid=55310#Comments Tue, 30 Oct 2012 15:09:25 GMT Mon, 06 May 2013 12:27:47 GMT http://mathdude.quickanddirtytips.com/how-to-quickly-calculate-percentages.aspx feedback@quickanddirtytips.com (Managing Editor) feedback@quickanddirtytips.com (Webmaster) en-us