0.485×102-48.5怎么简便计算?

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0.485×102-48.5怎么简便计算?0.485×102-48.5怎么简便计算?0.485×102-48.5怎么简便计算?0.485×102-48.5=48.5x1.02-48.5=48.5x(1

0.485×102-48.5怎么简便计算?
0.485×102-48.5怎么简便计算?

0.485×102-48.5怎么简便计算?
0.485×102-48.5
=48.5x1.02-48.5
=48.5x(1.02-1)
=48.5x0.02
=0.97

0.485×102-48.5
=48.5x1.02-48.5
=48.5x(1.02-1)
=48.5x0.02
=0.97

原式=0.485x(100+2)-48.5=48.5+0.485x2-48.5=0.97

原式=0.485*102-0.485*100=0.485(102-100)=0.485*2=0.97

0.485X102-48.5=48.5X1.02-48.5=48.5X(1.02-1)=48.5X0.02=0.485X2=0.97看的懂不。再来一个
0.485X102-48.5=0.485X102-0.485X100=0.485X(102-100)=0.485X2=0.97