Comments on: Mental Math Shortcuts https://betterexplained.com/articles/mental-math-shortcuts/ Math lessons that click Mon, 29 Jun 2020 18:19:36 +0000 hourly 1 By: Mickey Cashen https://betterexplained.com/articles/mental-math-shortcuts/#comment-383115 Mon, 29 Jun 2020 18:19:36 +0000 http://betterexplained.com/articles/mental-math-shortcuts/#comment-383115 I was hoping for mental math shorcuts like calculating 6 x 121 is most easily done in your head by the easy 6 x 120 = 720 and adding the other 6 to get 726.
I went through high school before calculators became affordable to the masses and there were lots of mental math tricks we learned that still come in handy because it’s immediately clear when there’s a wrong answer on the calculator because something was entered wrong.
I’ve had gifted students, taking calculus in high school, multiply two large numbers together, get an answer less than 1, and they’re so used to relying on the calculator it doesn’t occur to them that the answer is impossible!

]]> By: vasanth https://betterexplained.com/articles/mental-math-shortcuts/#comment-335884 Sat, 30 Sep 2017 10:16:31 +0000 http://betterexplained.com/articles/mental-math-shortcuts/#comment-335884 In reply to Neil Ramroop.

yes its true

]]> By: Rushikesh https://betterexplained.com/articles/mental-math-shortcuts/#comment-335778 Thu, 14 Sep 2017 11:47:25 +0000 http://betterexplained.com/articles/mental-math-shortcuts/#comment-335778 I am hungry

]]> By: Viraj https://betterexplained.com/articles/mental-math-shortcuts/#comment-334361 Wed, 25 Jan 2017 12:05:30 +0000 http://betterexplained.com/articles/mental-math-shortcuts/#comment-334361 Easy to learn

]]>