题目内容

用合理的方法计算。
(1)+ (2)
(3)(+)×8+ (4)+
(5)[1÷()]
(1)+
  =+
  =
  =
  
(2)
  =(2006+1)
  =2006+
  =2005+
  =2005
(3)(+)×8+
  =8+8+
  =5+(+
  =5+1
  =6
  
(4)+
  =×(+
  =×(+
  =
  =
(5)[1÷()]
  =÷[1÷()]
  =÷[1÷]
  =÷
  =÷
  =
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