1234*9090+1234*909

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1234*9090+1234*9091234*9090+1234*9091234*9090+1234*9091234*9090+1234*909=1234*(9090+909)=1234*9999=1

1234*9090+1234*909
1234*9090+1234*909

1234*9090+1234*909
1234*9090+1234*909
=1234*(9090+909)
=1234*9999
=1234*(10000-1)
=12340000-1234
=12338766

1234*（9090+909）=1234*9999=1234*（10000-1）=12340000-1234=12338766

1234*9090+1234*909
=1234*(9090+909)
=1234*9999
=1234*(10000-1)
=12338766

1234*9090+1234*909=1234*(9090+909)=1234*9999=1234*(10000-1)=12340000-1234=12338766

1234*909+1234*9090 1234*9090+1234*909 1234 1234%^&*()?., 1234 1234 1234 1234+1234=1234, 1432*1234×1234 123 123 1234 1234 123+1234+1234=? 1234 ,1234 为什么像首歌 54321+9090+54321+909的简便算法 1234除以1234又1234/1235 1234×1-1234=1234对不对? 5100除84+3300除84 99x123456-99x12345 7777x4444+7777x5555 1234x9090+1234+909 1 0001x10001 457x100100 1234+1234+1234+1234+4321+4321+4321＝ 1234+4321