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TranceAddict Forums > Main Forums > Chill Out Room > Cool math tricks!
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Omegasox
AI for MVP



Registered: Sep 2002
Location: Pennsylvania
Re: Cool math tricks!

quote:
Originally posted by Sunsnail
Here's one with multiplication:

24
x12

Now, do the right column. 2x4=8. Now, cross multiply 4x1, and 2x2, and add the sum together. which is 8. Now multiply The left column, 2x1. Which is 2. The answer is 288. Pretty cool huh?


How is that fast? Just multiply 24 by 10, 24 by 2, then add. A lot simpler than whatever ass backward method you're using.

Old Post Apr-11-2005 23:20  United States
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Tiestor
trancEaddict in JAIL



Registered: Apr 2005
Location: Brenda, Holland

Take any number. Multiply it by itself than divide it by the orginal number you choose.

The result should be the orginal number you choose!!!


For example:

I chose the 4.

4 X 4 = 16

16/4 = 4


Amazing !!!



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Old Post Apr-11-2005 23:24 
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Geoff
Supreme breaksaddict



Registered: Oct 2004
Location: Alameda, CA

2+2=4


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Old Post Apr-12-2005 06:00  United States
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Resnick
Supreme tranceaddict



Registered: Feb 2003
Location: Toronto

quote:
Originally posted by THE_Chris
Just for the record, heres a REAL maths test. My Maths Methods II exam paper. I did this last summer.

[IM]http://img.photobucket.com/albums/v458/THE_Chris533976/methods1.gif[/IMG]

[IM]http://img.photobucket.com/albums/v458/THE_Chris533976/methods2.gif[/IMG]

[IM]http://img.photobucket.com/albums/v458/THE_Chris533976/methods3.gif[/IMG]


lol this is a joke...dont compare this to real math

edit: haah by real, i of course mean challenging


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Old Post Apr-12-2005 06:39  Canada
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Psy-T
Melody Klein



Registered: Jan 2003
Location: Haifa
Thumbs up Re: Re: Cool math tricks!

quote:
Originally posted by Omegasox
How is that fast? Just multiply 24 by 10, 24 by 2, then add. A lot simpler than whatever ass backward method you're using.


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Old Post Apr-12-2005 06:41  Israel
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trance85
Senior tranceaddict



Registered: Nov 2004
Location: Denver, United States

quote:
How is that fast? Just multiply 24 by 10, 24 by 2, then add. A lot simpler than whatever ass backward method you're using.


Thats what I usually do too :/


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Old Post Apr-12-2005 06:50  United States
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Sunsnail
Global Moderator



Registered: Sep 2004
Location:

true, but 24 x 18.....now try that

Old Post Apr-12-2005 19:25 
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sandstorm03
...



Registered: Feb 2003
Location:

quote:
Originally posted by Sunsnail
true, but 24 x 18.....now try that

24*20 = 480 - 48 = 432


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Old Post Apr-12-2005 19:29  Italy
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Sunsnail
Global Moderator



Registered: Sep 2004
Location:

ummmm... ok........but, it's nice knowing a different way... right?

Old Post Apr-12-2005 19:35 
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Michael19
Liverpool FC fan



Registered: Jul 2004
Location: Eire

111,111,111 x 111,111,111 = 12,345,678,987,654,321


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Old Post Apr-12-2005 19:55 
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Krypton
83.798 g/6.022x10^23



Registered: Nov 2003
Location: Texas

quote:
Originally posted by Michael19
111,111,111 x 111,111,111 = 12,345,678,987,654,321


amazing


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Old Post Apr-13-2005 01:01  Korea-Democratic Peoples Republic
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