题目内容

递等式计算。(能简便计算的可用简便方法计算)
(1)9.37﹣4.7+0.63 (2)4.05÷0.81+4.2 (3)0.125×32×0.25
(4)4.8×99+4.8 (5)5.11﹣1.25﹣0.75 (6)1.76﹣[(0.74+0.26)÷0.8]
(1)9.37﹣4.7+0.63
  =(9.37+0.63)﹣4.7
  =10﹣4.7
  =5.3
(2)4.05÷0.81+4.2
  =5+4.2
  =9.2
(3)0.125×32×0.25
  =0.125×8×4×0.25
  =(0.125×8)×(4×0.25)
  =1×1
  =1
(4)4.8×99+4.8
  =4.8×(99+1)
  =4.8×100
  =480
(5)5.11﹣1.25﹣0.75
  =5.11﹣(1.25+0.75)
  =5.11﹣2
  =3.11
(6)1.76﹣[(0.74+0.26)÷0.8]
  =1.76﹣[1÷0.8]
  =1.76﹣1.25
  =0.51
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