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    ypl's Avatar
    ypl Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 17, 2008, 08:56 PM
    3rd grade math
    (8+1)+5=8+(?+5)
    Wondergirl's Avatar
    Wondergirl Posts: 39,354, Reputation: 5431
    Jobs & Parenting Expert
    		  
    #2

    Apr 17, 2008, 09:03 PM
    First, what is 8+1+5?
    iamthetman's Avatar
    iamthetman Posts: 105, Reputation: 8
    Junior Member
    		  
    #3

    Apr 18, 2008, 06:54 AM
    8+1+3=14
    1+3+8=14
    3+8+1=14

    8+(1+3)=14
    (8+1)+3=14
    1+(3+8)=14
    (1+3)+8=14
    3+(8+1)=14
    (3+8)+1=14

    Notice that addition is commutative!
    jennysolano18's Avatar
    jennysolano18 Posts: 36, Reputation: 4
    Junior Member
    		  
    #4

    Sep 24, 2008, 03:33 PM
    (8+1)+5=8+(1+5)
    8+1=9 1+5=6
    9+5=14 14=6+8
    14=14
    mathwiz3502's Avatar
    mathwiz3502 Posts: 121, Reputation: 1
    Junior Member
    		  
    #5

    Oct 4, 2009, 12:45 PM

    1 because of the associative property
    (in alll addidion or all multiplication parenthesis
    Do not matter)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #6

    Oct 5, 2009, 08:34 AM

    Wait mathwiz3502, multiplication including parenthesis does matter, in that sense:
    morgaine300's Avatar
    morgaine300 Posts: 6,561, Reputation: 276
    Uber Member
    		  
    #7

    Oct 8, 2009, 06:54 PM

    Adsfjlahsdflkab, considering that you are new here, with one post, which is a question and not an answer to anything... let me explain a little something before you negative your way right out of this place...

    No one here can possibly know what a poster does or does not already understand. Because most of the time they don't say. They post a problem. There could be 4 steps to something and they've already solved the first 3 and we'd have no clue. So we just have to start somewhere. Wondergirl started in one place; iamthetman started in a different place. Neither of them actually did or did not solve anything... they just "started" some place.

    If you brought your mind-reading cap with you, we'd appreciate if you'd share it with the rest of us.
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