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Topic: Math Trick:  (Read 4559 times)

mc1962

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Math Trick:
« on: May 16, 2010, 03:30:43 pm »
Think of any number

Double it

Add 10

Divide by 2

Subtract the first number you started with

YOUR ANSWER IS 5 (FIVE)

**************WORKS WITH ANY NUMBER************
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tuyetmai

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Re: Math Trick:
« Reply #1 on: May 16, 2010, 03:35:56 pm »
Quote from: mc1962 on May 16, 2010, 03:30:43 pm
Think of any number

Double it

Add 10

Divide by 2

Subtract the first number you started with

YOUR ANSWER IS 5 (FIVE)

**************WORKS WITH ANY NUMBER************
Wow that was interesting ... I never thought of that :)
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apatel12

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Re: Math Trick:
« Reply #2 on: May 17, 2010, 04:46:42 pm »
It only works with certain numbers like 1-9 or 1-10 or something like that.
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mc1962

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Re: Math Trick:
« Reply #3 on: May 17, 2010, 07:03:34 pm »
Quote from: apatel12 on May 17, 2010, 04:46:42 pm
It only works with certain numbers like 1-9 or 1-10 or something like that.
............
It works with every number  :)
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dodgers16

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Re: Math Trick:
« Reply #4 on: May 17, 2010, 11:39:22 pm »
 thats a really good numbers trick, but I have heard that one before. And it does work every time!
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karenkpc

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Re: Math Trick:
« Reply #5 on: May 18, 2010, 05:21:41 am »
hehehe
I LOVE stuff like this...maybe we need one a day...
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dkanofsky

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Re: Math Trick:
« Reply #6 on: May 18, 2010, 05:52:08 am »
Outstanding!! I tutor math for those studying for the GED.  Can't wait to try it on the students!!! :wave: :)
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sweatytree

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Re: Math Trick:
« Reply #7 on: May 18, 2010, 06:03:35 pm »
I haven't heard this one in a long time...
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florezitta10

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Re: Math Trick:
« Reply #8 on: May 18, 2010, 07:31:20 pm »
Quote from: dkanofsky on May 18, 2010, 05:52:08 am
Outstanding!! I tutor math for those studying for the GED.  Can't wait to try it on the students!!! :wave: :)

Hi there I am going to be getting my GED soon any advice on what to expect?
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girlswin2

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Re: Math Trick:
« Reply #9 on: May 18, 2010, 10:30:15 pm »
This is pretty cool!!  Funny how they work so well.  My hubby is a math wiz and he loves to come up with stuff like this.  Your cool dude   :thumbsup:
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tuyetmai

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Re: Math Trick:
« Reply #10 on: May 20, 2010, 07:11:05 pm »
Quote from: mc1962 on May 17, 2010, 07:03:34 pm
Quote from: apatel12 on May 17, 2010, 04:46:42 pm
It only works with certain numbers like 1-9 or 1-10 or something like that.
............
It works with every number  :)
Pretty cool... It's interesting.
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dmecham56

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Re: Math Trick:
« Reply #11 on: May 20, 2010, 07:30:22 pm »
Great math trick. I enjoyed doing it with several numbers and it worked every time!
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ktheodos

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Re: Math Trick:
« Reply #12 on: May 20, 2010, 08:20:07 pm »
interesting...but it makes sense if you think about...you're doubling it, then you end up dividing by two...after adding 5 (which is 10 divided by 2)...
there's some other interesting ones out there too that are a bit more complicated....but thanks for sharing!
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aslesh

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Re: Math Trick:
« Reply #13 on: May 20, 2010, 11:47:58 pm »
Yeah similar ones include adding say 16 after doubling it. Then dividing by 2 and subtracting 8 and you get the original number.
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dkanofsky

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Re: Math Trick:
« Reply #14 on: May 21, 2010, 05:43:24 am »
Quote from: florezitta10 on May 18, 2010, 07:31:20 pm
Quote from: dkanofsky on May 18, 2010, 05:52:08 am
Outstanding!! I tutor math for those studying for the GED.  Can't wait to try it on the students!!! :wave: :)

Hi there I am going to be getting my GED soon any advice on what to expect?

Are you going to be getting your GED soon or are you going to start a GED class soon ?
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