9.9*212 怎样算
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9.9*212 怎样算
=(10-0.1)*212
=10*212+0.1*212
=2120-21.2
=2098.8
212*10-212*0.1=2120-21.2=2098.8
9.9*212
=(10-0.1)*212
=10*212-0.1*212
=2120-21.2
=2098.8
9.9*212 怎样算
=(10-0.1)*212
=10*212+0.1*212
=2120-21.2
=2098.8
212*10-212*0.1=2120-21.2=2098.8
9.9*212
=(10-0.1)*212
=10*212-0.1*212
=2120-21.2
=2098.8