题目内容

脱式计算。
(1)(68+178)÷3 (2)32×43-85
(3)560+14×25 (4)(58+21)×24
(5)125×8×9 (6)(56+144)÷4
(1)(68+178)÷3
      =246÷3
      =82
(2)32×43-85
  =1376-85
  =1291
(3)560+14×25
      =560+350
      =910
(4)(58+21)×24
   =79×24
          =1896
(5)125×8×9
       =1000×9
       =9000
(6)(56+144)÷4
         =200÷4
         =50
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