【下面各题怎样算简便就怎样算.3.28×4.6+6.72×4-查字典问答网
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  【下面各题怎样算简便就怎样算.3.28×4.6+6.72×4.60.25×1.25×0.49.73×2.8-4.73×2.8.12.5×4+3.12÷1.225.2-(7.8-2.6)×1.314.08÷[0.8×(7.93-2.43)].】

  下面各题怎样算简便就怎样算.

  3.28×4.6+6.72×4.60.25×1.25×0.49.73×2.8-4.73×2.8.12.5×4+3.12÷1.225.2-(7.8-2.6)×1.314.08÷[0.8×(7.93-2.43)].

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2020-04-09 09:51
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  (1)3.28×4.6+6.72×4.6,

  =4.6×(3.28+6.72),

  =4.6×10,

  =46;

  (2)0.25×1.25×0.4,

  =(0.25×0.4)×1.25,

  =0.1×1.25,

  =0.125;

  (3)9.73×2.8-4.73×2.8,

  =2.8×(9.73-4.73),

  =2.8×5,

  =14;

  (4)12.5×4+3.12÷1.2,

  =50+2.6,

  =52.6;

  (5)25.2-(7.8-2.6)×1.3,

  =25.2-5.2×1.3,

  =25.2-6.76,

  =18.44;

  (6)14.08÷[0.8×(7.93-2.43)],

  =14.08÷[0.8×5.5],

  =14.08÷4.4,

  =3.2.

2020-04-09 09:53:40

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