如题所述
9.5*101+85*9.9
=9.5*(100+1)+85*(10-0.1)
=9.5*100+9.5*1+85*10-85*0.1
=950+9.5+850-8.5
=(950+850)+(9.5-8.5)
=1800+1
=1801
=9.5*(100+1)+85*(10-0.1)
=9.5*100+9.5*1+85*10-85*0.1
=950+9.5+850-8.5
=(950+850)+(9.5-8.5)
=1800+1
=1801
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