能简算的要简算0.4×73+0.04+2700.35×1.2-查字典问答网
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  能简算的要简算0.4×73+0.04+2700.35×1.25×2×0.82.4×10218-1.8÷0.125÷0.8.

  能简算的要简算0.4×73+0.04+2700.35×1.25×2×0.82.4×10218-1.8÷0.125÷0.8.

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2020-04-07 22:13
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马舜雄

  (1)0.4×73+0.04+270,

  =29.2+0.04+270,

  =29.24+270,

  =299.24;

  (2)0.35×1.25×2×0.8,

  =(0.35×2)×(1.25×0.8),

  =0.7×1,

  =0.7;

  (3)2.4×102,

  =2.4×(100+2),

  =2.4×100+2.4×2,

  =240+4.8,

  =244.8;

  (4)18-1.8÷0.125÷0.8,

  =18-1.8÷(0.125×0.8),

  =18-1.8÷0.1,

  =18-18,

  =0.

2020-04-07 22:17:12

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