How can you solve this?

Post by **Turbine** » Fri Sep 09, 2005 7:06 pm

Consider this a chalenge for today;

Solve:

788 139 - 4 890

without a calculator and without placing the top number over the bottom and subtracting the ones, tens, hundrets, etc.. (the "standard" way).

There is one more way to complete this.
Do you know what it is? Huh? DO you?

Post by **Freakaloin** » Fri Sep 09, 2005 7:09 pm

rofl...math...

Post by **Turbine** » Fri Sep 09, 2005 7:11 pm

Exactly.

Post by **shiznit** » Fri Sep 09, 2005 7:16 pm

the answer is 783 249, yeah it's really easy just use your head.

Post by **Turbine** » Fri Sep 09, 2005 7:17 pm

I am goeing to give you an answer.
Since your brains are not working today.

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To calculate 788 139 minus 4 890, first find the nines complement of 004 890 : 995 109. Now add 788 139 and 995 109 to get 1 783 248. Remove the highest-order digit to arrive at 783 248. Finally, add one to find the answer: 783 249.

Post by **shiznit** » Fri Sep 09, 2005 7:18 pm

That's the long way, just minus it in your head. I already gave you the answer.

Post by **Turbine** » Fri Sep 09, 2005 7:22 pm

I know, but what I was trying to find out is, if anyone know any other way to do it.

Just subtracting it in your head is to easy.

Post by **shiznit** » Fri Sep 09, 2005 7:25 pm

I see.

Post by **menkent** » Sat Sep 10, 2005 4:41 am

fucking christ. just subtract 5000 then add 110.
rocket science++

Post by **glossy** » Sat Sep 10, 2005 4:44 am

menkent wrote:fucking christ. just subtract 5000 then add 110.
rocket science++

winner

Post by **Pext** » Sat Sep 10, 2005 9:09 am

Turbine wrote:To calculate 788 139 minus 4 890, first find the nines complement of 004 890 : 995 109. Now add 788 139 and 995 109 to get 1 783 248. Remove the highest-order digit to arrive at 783 248. Finally, add one to find the answer: 783 249.

menkent wrote:fucking christ. just subtract 5000 then add 110.
rocket science++

Post by **phantasmagoria** » Sat Sep 10, 2005 12:23 pm

Turbine wrote:I know, but what I was trying to find out is, if anyone know any other way to do it.

Just subtracting it in your head is to easy.

yeah, because the whole point of solving something is to do it in the most complicated way possible :icon27: