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ingrownpocket (OP)
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December 14, 2012, 03:28:08 PM
Last edit: December 17, 2017, 10:24:26 PM by Carlos L.
 #1

.
jasinlee
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Its as easy as 0, 1, 1, 2, 3


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December 14, 2012, 03:30:36 PM
 #2

This looks like an abbreviated division trick I saw my kids looking up on youtube once. Pretty cool the new methods that are used now days to shorten calculations mentally.

BTC 1JASiNZxmAN1WBS4dmGEDoPpzN3GV7dnjX DVC 1CxxZzqcy7YEVXfCn5KvgRxjeWvPpniK3                     Earn Devcoins Devtome.com
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December 14, 2012, 03:35:33 PM
 #3

It's funny because this week I've learned this trick: http://www.youtube.com/watch?v=9qQAYEYLCoU

I can't understand why they don't teach this at school.
BoardGameCoin
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December 14, 2012, 05:23:41 PM
 #4

It's a visual aid for multiplication.

You make a line group for each digit in each number. In your case, the first number's lines are going right and up and the second number's are going right and down. Highest digits start on the left. If you make the diamond shape, evenly, vertical slices of the intersection groups correspond with the 'no-carries' multiplication that goes into the corresponding output digit. First you sum these, then you pull off the lowest digit for each output group starting rightmost, and add any additional numbers to the next group to the left.

Is that enough to get the bounty?

e.g. 12 * 34

Code:
        2*3
  1*3        2*4
        1*4

=
       6
   3      8
       4

= 3, 10, 8
= (3+1)(0)(8)
= 408

If this is good enough, coins go to: 1bgc1FDPgANFsGcNcnmzpYKHrp7SWMgaZ Wink

I'm selling great Minion Games like The Manhattan Project, Kingdom of Solomon and Venture Forth at 4% off retail starting June 2012. PM me or go to my thread in the Marketplace if you're interested.

For Settlers/Dominion/Carcassone etc., I do email gift cards on Amazon for a 5% fee. PM if you're interested.
BoardGameCoin
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December 14, 2012, 05:43:05 PM
 #5

Thanks =)

I'm selling great Minion Games like The Manhattan Project, Kingdom of Solomon and Venture Forth at 4% off retail starting June 2012. PM me or go to my thread in the Marketplace if you're interested.

For Settlers/Dominion/Carcassone etc., I do email gift cards on Amazon for a 5% fee. PM if you're interested.
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