下面各题怎样简便就怎样算.①125×32×25②32.62--查字典问答网
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  下面各题怎样简便就怎样算.①125×32×25②32.62-2.25-3.75③146×34+34×54④85×102⑤6000÷125÷8⑥672-36+64.

  下面各题怎样简便就怎样算.①125×32×25②32.62-2.25-3.75③146×34+34×54④85×102⑤6000÷125÷8⑥672-36+64.

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2020-04-07 14:47
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陈振国

  ①125×32×25,

  =125×(8×4)×25,

  =(125×8)×(4×25),

  =1000×100,

  =100000;

  ②32.62-2.25-3.75,

  =32.62-(2.25+3.75),

  =32.62-6,

  =26.62;

  ③146×34+34×54,

  =(146+54)×34,

  =200×34,

  =6800;

  ④85×102,

  =85×(100+2),

  =85×100+85×2,

  =8500+170,

  =8670;

  ⑤6000÷125÷8,

  =6000÷(125×8),

  =6000÷1000,

  =6;

  ⑥672-36+64,

  =636+64,

  =700.

2020-04-07 14:51:12

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