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發表 destinysky19 於 星期日 五月 23, 2010 8:02 pm

gkw0824usa 寫到:#ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=6#ed_cl# #ed_op#FONT size=3#ed_cl#那速算法的原理如此而已,如(1),三位數也就如法炮製,如(2)#ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=6#ed_cl##ed_op#/FONT#ed_cl# #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#(1)        A B     (2)       A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#       x)  1 1              x)    1 1#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black"#ed_cl##ed_op#FONT size=4#ed_cl#      #ed_op#STRIKE#ed_cl#             #ed_op#/STRIKE#ed_cl#          #ed_op#STRIKE#ed_cl#                 #ed_op#/STRIKE#ed_cl##ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#            A B               A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#         A B               A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black"#ed_cl##ed_op#FONT size=4#ed_cl#    #ed_op#STRIKE#ed_cl#                #ed_op#/STRIKE#ed_cl#      #ed_op#STRIKE#ed_cl#                    #ed_op#/STRIKE#ed_cl##ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#      A(A+B)B     A(A+B)(B+C)B#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#

突然發現你的ABC*11寫錯了...應該會等於A(A+B)(B+C)C才對...

發表 destinysky19 於 星期三 一月 27, 2010 1:48 am

我也是一直都這樣算...
可是三位數我倒是都直接乘
一來是不常碰到 而來是因為用上面的算法都是直接心算...在三位數的部分近位容易搞混...

發表 阿扇 於 星期二 二月 20, 2007 4:05 pm

gkw0824usa 寫到:#ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=6#ed_cl# #ed_op#FONT size=3#ed_cl#那速算法的原理如此而已,如(1),三位數也就如法炮製,如(2)#ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=6#ed_cl##ed_op#/FONT#ed_cl# #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#(1)        A B     (2)       A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#       x)  1 1              x)    1 1#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black"#ed_cl##ed_op#FONT size=4#ed_cl#      #ed_op#STRIKE#ed_cl#             #ed_op#/STRIKE#ed_cl#          #ed_op#STRIKE#ed_cl#                 #ed_op#/STRIKE#ed_cl##ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#            A B               A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#         A B               A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black"#ed_cl##ed_op#FONT size=4#ed_cl#    #ed_op#STRIKE#ed_cl#                #ed_op#/STRIKE#ed_cl#      #ed_op#STRIKE#ed_cl#                    #ed_op#/STRIKE#ed_cl##ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#      A(A+B)B     A(A+B)(B+C)B#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#
#ed_op#DIV#ed_cl#哦....原來如此#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#以後可以快個5秒了#ed_op#IMG src="http://yll.loxa.edu.tw/phpBB2/richedit/smileys/yy06.gif"#ed_cl##ed_op#/DIV#ed_cl#

發表 gkw0824usa 於 星期日 一月 07, 2007 10:37 pm

#ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=6#ed_cl# #ed_op#FONT size=3#ed_cl#那速算法的原理如此而已,如(1),三位數也就如法炮製,如(2)#ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=6#ed_cl##ed_op#/FONT#ed_cl# #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#(1)        A B     (2)       A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#       x)  1 1              x)    1 1#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black"#ed_cl##ed_op#FONT size=4#ed_cl#      #ed_op#STRIKE#ed_cl#             #ed_op#/STRIKE#ed_cl#          #ed_op#STRIKE#ed_cl#                 #ed_op#/STRIKE#ed_cl##ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#            A B               A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#         A B               A B C#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black"#ed_cl##ed_op#FONT size=4#ed_cl#    #ed_op#STRIKE#ed_cl#                #ed_op#/STRIKE#ed_cl#      #ed_op#STRIKE#ed_cl#                    #ed_op#/STRIKE#ed_cl##ed_op#/FONT#ed_cl##ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#FONT face="Arial Black" size=4#ed_cl#      A(A+B)B     A(A+B)(B+C)B#ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#

發表 海蠍子 於 星期日 一月 07, 2007 7:31 pm

結論就是...
老實點算

雖然說當然知道有這東西
但光靠這個太狹義了
熟了什麼都會
...個人見解

發表 ☆ ~ 幻 星 ~ ☆ 於 星期日 一月 07, 2007 6:16 pm

萬一是三位數的怎麼辦呢?

發表 lcflcflcf 於 星期五 一月 05, 2007 8:42 am

其實我以前都是用這種方法乘以11
先折再加
但現在多是用計算機,,,
倒把以前計算的習慣都忘掉

感覺上現在普通四則運算我自己所用的時間比較長
就是慣用計算機所種下的果><"

[好玩][數學]乘以 11 要怎麼算 ?

發表 yll 於 星期四 一月 04, 2007 8:30 pm

http://yll.loxa.edu.tw/0_ppt/TimeTableEleven.pps

乘以 11 要怎麼算 ?
祕招大公開,30 秒讓你學會這絕招