Math Goodies is a free math help portal for students, teachers, and parents.
|
Interactive Math Goodies Software

testing left nav
Math Forums @ Math Goodies
Home | Profile | Active Topics | Members | Search | FAQ
 All Forums  Homework Help Forums  Miscellaneous Math Topics  What result do you get? New Topic  Reply to Topic  Printer Friendly
Author  Topic

USA
635 Posts

 Posted - 06/19/2012 :  21:46:27 What result do you get when you simplify this expression? I get 13, but my son insists it is 4.16-6x22(5-3)Thanks,Gisele

the_hill1962

USA
1469 Posts

 Posted - 06/20/2012 :  18:47:04 Duplicate post:http://www.mathgoodies.com/forums/topic.asp?TOPIC_ID=34383

royhaas
Moderator

USA
3059 Posts

 Posted - 06/21/2012 :  09:57:48 quote:Originally posted by the_hill1962Duplicate post:http://www.mathgoodies.com/forums/topic.asp?TOPIC_ID=34383Yes, it's a duplicate, but it touches on an important topic - operator precedence (aka PEMDAS) that many students have trouble with.

the_hill1962

USA
1469 Posts

 Posted - 06/26/2012 :  15:33:58 This is one of the reasons why I replied with "duplicate post".It is important that everyone (students and teachers) see all the dialog.Having three different places would make a possibility of someone not seeing Ultraglide's excellent post.

royhaas
Moderator

USA
3059 Posts

 Posted - 06/27/2012 :  11:33:42 See my response today to the original post.

the_hill1962

USA
1469 Posts

 Posted - 06/27/2012 :  21:31:48 Ahhhh, aren't calculators nice?It really is too easy mess up and get the "13" result by hand!quote:Originally posted by royhaasSee my response today to the original post.

Subhotosh Khan

USA
9117 Posts

 Posted - 06/29/2012 :  20:47:44 quote:Originally posted by AdminWhat result do you get when you simplify this expression? I get 13, but my son insists it is 4.16-6x22(5-3)=16-6*22*(2)=16-122*2= 16 - 6 * 2= 4Although multiplication and division has the same rank - it needs to be carried out left-to-right.Thanks,Gisele
Topic
 New Topic  Reply to Topic  Printer Friendly Jump To: Select Forum New Visitor Forum       Testing Forum Homework Help Forums       Basic Math and Pre-Algebra       Algebra       Geometry and Trigonometry       Pre-Calculus and Calculus       Probability and Statistics       Standardized Test Preparation Help       Miscellaneous Math Topics Educator Forum       Teacher Talk Parent Forum       Parent's Place  -------------------- Home Active Topics Frequently Asked Questions Member Information Search Page
 Math Forums @ Math Goodies © 2000-2004 Snitz Communications