8.16*0.3+81.6*0.07怎么简算

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8.16*0.3+81.6*0.07怎么简算
8.16*0.3+81.6*0.07怎么简算

8.16*0.3+81.6*0.07怎么简算
8.16*0.3+81.6*0.07
=8.16*0.3+8.16*0.7
=8.16*(0.3+0.7)
=8.16

8.16*0.3+81.6*0.07
=81.6*0.03+81.6*0.07
=81.6*(0.03+0.07)
=81.6*0.10
=8.16