(用递等式计算,写出必要的计算过程,能简则简)(1÷0.5+-查字典问答网
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  (用递等式计算,写出必要的计算过程,能简则简)(1÷0.5+0.5÷1)×0.140.4×0.4×1.5×2.56.38×99+6.38(200-195.2)÷(8.37+1.23)×0.5[5.4÷18+(41.47+38.53)×0.1]÷2.5

  (用递等式计算,写出必要的计算过程,能简则简)

  (1÷0.5+0.5÷1)×0.14 0.4×0.4×1.5×2.56.38×99+6.38(200-195.2)÷(8.37+1.23)×0.5[5.4÷18+(41.47+38.53)×0.1]÷2.5

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2020-04-1819:38
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  (1)(1÷0.5+0.5÷1)×0.14

  =(2+0.5)×0.14

  =2.5×0.14

  =0.35;

  (2)0.4×0.4×1.5×2.5

  =(0.4×1.5)×(0.4×2.5)

  =0.6×1

  =0.6;

  (3)6.38×99+6.38

  =6.38×(99+1)

  =6.38×100

  =638;

  (4)(200-195.2)÷(8.37+1.23)×0.5

  =4.8÷9.6×0.5

  =0.5×0.5

  =0.25;

  (5)[5.4÷18+(41.47+38.53)×0.1]÷2.5

  =[5.4÷18+80×0.1]÷2.5

  =[0.3+8]÷2.5

  =8.3÷2.5

  =3.32.

2020-04-18 19:41:21
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