计算下列各题(脱式计算)简便计算。

2025-04-05 05:46:06
推荐回答(1个)
回答1:

  98+265+202 273-73-27
  =(98+202)+265 =273-(73+27)
  =300+265 =273-100
  =565 =173
  250×13×4 3200÷4÷25
  =(250×4)×13 =3200÷(4×25)
  =1000×13 =3200÷100
  =13000 =32
  88×125 99×38+38
  =11×(8×125) =(99+1)×38
  =11×1000 =100×38
  =11000 =3800
  17×23-23×7 72×125
  =(17-7)×23 =9×(8×125)
  =10×23 =9×1000
  =230 =9000