270*3.8+2.7*650+73*96+0.73*700
=27*38+27*65+73*96+73*7
=27*(38+65)+73*(96+7)
=27*103+73*103
=(27+73)*103
=100*103
=10300
270*3.8+2.7*650+73*96+0.73*700简便计算
270*3.8+2.7*650+73*96+0.73*700
=27*38+27*65+73*96+73*7
=27*(38+65)+73*(96+7)
=27*103+73*103
=(27+73)*103
=100*103
=10300