1.1*6.5+54*0.11-11.9怎么简便计算

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1.1*6.5+54*0.11-11.9怎么简便计算
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1.1*6.5+54*0.11-11.9怎么简便计算
1.1*6.5+54*0.11-11.9怎么简便计算

1.1*6.5+54*0.11-11.9怎么简便计算
1.1×6.5+54×0.11-11.9
=1.1×6.5+5.4×1.1-11.9
=1.1×(6.5+5.4)-11.9
=1.1×11.9-11.9
=(1.1-1)×11.9
=0.1×11.9
=1.19

1.1*6.5+54*0.11-11.9
=1.1*6.5+5.4*1.1-11.9
=1.1*(6.5+5.4)-11.9
=1.1*11.9-11.9
=(1.1-1)*11.9
=0.1*11.9
=1.19

1.1*6.5+54*0.11-11.9
=1.1*(6.5+5.4)-11.9
=1.1*10-11.9
=11-11.9
=-0.9