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=0.485×102-0.485×100=0.

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
=0.485×102-0.485×100
=0.485×2
=0.97