递等式计算,能简便的用简便方法计算5.41+3.46-2.4-查字典问答网
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  递等式计算,能简便的用简便方法计算5.41+3.46-2.462.03-0.18-2.82+7.9710-4.44-5.5632.63+7.89-6.4125×25×3297×88.

  递等式计算,能简便的用简便方法计算5.41+3.46-2.46 2.03-0.18-2.82+7.9710-4.44-5.56 32.63+7.89-6.4125×25×32 97×88.

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2020-04-08 01:14
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宋莉

  (1)5.41+3.46-2.46,

  =5.41+(3.46-2.46),

  =5.41+1,

  =6.41;

  (2)2.03-0.18-2.82+7.97,

  =(2.03+7.97)-(0.18+2.82),

  =10-3,

  =7;

  (3)10-4.44-5.56,

  =10-(4.44+5.56),

  =10-10,

  =0;

  (4)32.63+7.89-6.4,

  =40.52-6.4,

  =34.12;

  (5)125×25×32,

  =125×25×(8×4),

  =(125×8)×(25×4),

  =1000×100,

  =100000;

  (6)97×88,

  =(100-3)×88,

  =100×88-3×88,

  =8800-264,

  =8536.

2020-04-08 01:19:27

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