9.8*45+5.5*98怎么算

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9.8*45+5.5*98怎么算9.8*45+5.5*98怎么算9.8*45+5.5*98怎么算9.8*45+5.5*98=9.8*45+9.8*55=9.8*(45+55)=9.8*100=9809

9.8*45+5.5*98怎么算
9.8*45+5.5*98怎么算

9.8*45+5.5*98怎么算
9.8*45+5.5*98
=9.8*45+9.8*55
=9.8*(45+55)
=9.8*100
=980

9.8*45+5.5*98
=9.8*45+5.5*10*9.8
=9.8*45+55*9.8
=9.8*(45+55)
=9.8*100
=980