题目内容

计算。
(1)20﹣2.73﹣8.27+1 (2)7+1×5
(3)[(88+)×1.125﹣54]÷23% (4)[2÷(3)×1]÷4.02
(1)20﹣2.73﹣8.27+1
  =(20+1)﹣(2.73+8.27)
  =21﹣11
  =10
(2)7+1×5
  =7+×1
  =(+)×
  =5
(3)[(88+)×1.125﹣54]÷23%
  =[(88+)×1﹣54]÷23%
  =[(88×+×)﹣54]÷23%
  =46÷0.23
  =200
   
(4)[2÷(3)×1]÷4.02
  =[÷2×1]÷4.02
  =[×]÷4.02
  =100÷402
  =
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