计算,能简算的要简算.3.25×0.45+6.75×0.45-查字典问答网
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  计算,能简算的要简算.3.25×0.45+6.75×0.457.5×1025.64÷0.125÷826.9×0.48÷2.695.4×2.5×0.739.5×99+39.5.

  计算,能简算的要简算.3.25×0.45+6.75×0.45 7.5×1025.64÷0.125÷826.9×0.48÷2.695.4×2.5×0.739.5×99+39.5.

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2020-05-24 18:33
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  (1)3.25×0.45+6.75×0.45,

  =(3.25+6.75)×0.45,

  =10×0.45,

  =4.5;

  (2)7.5×102,

  =7.5×(100+2),

  =750+15,

  =765;

  (3)5.64÷0.125÷8,

  =5.64÷(0.125×8),

  =5.64÷1,

  =5.64;

  (4)26.9×0.48÷2.69,

  =26.9÷2.69×0.48,

  =1×0.48,

  =0.48;

  (5)5.4×2.5×0.7,

  =13.5×0.7,

  =9.45;

  (6)39.5×99+39.5,

  =39.5×(99+1),

  =39.5×100,

  =3950.

2020-05-24 18:33:45

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