【用简便方法计算.8-4.9-5.16.75-(0.9+3.-查字典问答网
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  【用简便方法计算.8-4.9-5.16.75-(0.9+3.75)34+1.8+3.66+0.20.96-0.28+0.04-0.72.】

  用简便方法计算.

  8-4.9-5.1

  6.75-(0.9+3.75)34+1.8+3.66+0.20.96-0.28+0.04-0.72.

1回答
2020-11-30 18:03
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刘明政

  (1)8-4.9-5.1,

  =8-(4.9+5.1),

  =8-10,

  =-2;

  (2)6.75-(0.9+3.75),

  =6.75-0.9-3.75,

  =6.75-3.75-0.9,

  =3-0.9,

  =2.1;

  (3)34+1.8+3.66+0.2,

  =34+3.66+(1.8+0.2),

  =34+3.66+2,

  =39.66;

  (4)0.96-0.28+0.04-0.72,

  =(0.96+0.04)-(0.28+0.72),

  =1-1,

  =0.

2020-11-30 18:05:30

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