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Author Topic: Simple Math Q , can you do it w/o machine help ?  (Read 1923 times)

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Offline 754

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Simple Math Q , can you do it w/o machine help ?
« on: March 21, 2011, 09:40:54 AM »
                         100 x 5/8...
 post your answer if you can do it without a calculator or computer..
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Offline Bob Wessner

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #1 on: March 21, 2011, 09:45:06 AM »
62.5
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Offline FunJimmy

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #2 on: March 21, 2011, 09:48:28 AM »
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Offline faux fiddy

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #3 on: March 21, 2011, 09:49:40 AM »
100/8 x5=

12.5 x5 =

12x5 +.5x.5=

60 + 2.5
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Offline Kframe

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #4 on: March 21, 2011, 09:50:46 AM »
Yes, 62.5 is right.  
One-eighth of anything is .125 of it, so 1/8 of 100 is 12.5 so 5x12.5=62.5

Another way to think about it is a half plus an eighth.  50+12.5=62.5

-K
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Offline Kframe

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #5 on: March 21, 2011, 09:52:02 AM »
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Offline markb

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #6 on: March 21, 2011, 10:10:12 AM »
Even easier, 5/8 is .625, now just move the decimal point two to the right.  ;)
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Offline Kong

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #7 on: March 21, 2011, 02:34:20 PM »
6?   ???
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Offline Stev-o

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #8 on: March 21, 2011, 05:17:34 PM »
5/8 = .625 x 100 = 62.5
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Offline MoMo

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #9 on: March 21, 2011, 07:39:31 PM »
1/8 is .125, so 5 times that is .625 and move the decimal accordingly
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Offline 754

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #10 on: March 21, 2011, 09:22:08 PM »
Well there is 8 or 9 of us can still do math..

 Next month, I will explain how "chain pitch" X "number of links" can give you the length of a new or fresh chain..

..after reasding the main topic, seems like nobody thought of doing that..... ;)
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Stev-o

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #11 on: March 22, 2011, 05:37:16 PM »
754 - did the question have anything to do w/KPH by any chance?
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Offline MasterChief750

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #12 on: March 22, 2011, 07:07:43 PM »
bananas! jk 62.5 is what my brain said
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Offline brooze72

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Re: Simple Math Q , can you do it w/o machine help ?
« Reply #13 on: March 22, 2011, 07:57:25 PM »
Us old farts can work in metric/imperial/american, whatever it takes!  Just takes awhile!
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