2、用竖式计算下面各题,并验算其中两道题。(18分)

482×7=                   506×6=                   38÷6=                  46÷7=            

60÷8=      604-482=          521+396=                              700-294=

验算:          验算:

3、估算。(6分)

59×7                         71×9                         586×5                       613×3

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