题目内容

脱式计算。
(1)7.5+3.3-4 (2)14×21-36 (3)12×(190-80)
(4)48×25-32×15 (5)(239-167)×25 (6)5260-26×51
(7)1300-125×4 (8)23×42-69 (9)350+26×17
(1)7.5+3.3-4
  =10.8-4
  =6.8
(2)14×21-36
  =294-36
  =258
(3)12×(190-80)
  =12×110
  =1320
(4)48×25-32×15
  =1200-480
  =720
(5)(239-167)×25
  =72×25
  =1800
(6)5260-26×51
  =5260-1326
  =3934
(7)1300-125×4
  =1300-500
  =800
(8)23×42-69
  =966-69
  =897
(9)350+26×17
  =350+442
  =792
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