0.8*46+3.5*8+9.1*2简算

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0.8*46+3.5*8+9.1*2简算
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0.8*46+3.5*8+9.1*2简算
0.8*46+3.5*8+9.1*2简算

0.8*46+3.5*8+9.1*2简算
0.8*46+3.5*8+9.1*2
=8*4.6+3.5*8+9.1*2
=8*(4.6+3.5)+9.1*2
=8*8.1+(8.1+1)*2
=8*8.1+8.1*2+2
=(8+2)*8.1+2
=10*8.1+2
=81+2
=83

0.8*46+3.5*8+9.1*2
=8*4.6+3.5*8+9.1*2
=8*(4.6+3.5)+9.1*2
=8*8.1+9.1*2
=8*8.1+8.1*2+1*2
=8.1*(8+2)+2
=83

0.8*46+3.5*8+9.1*2
=8×(4.6+3.5)+(8.1+1)×2
=8×8.1+8.1×2+2
=8.1×(8+2)+2
=8.1×10+2
=81+2
=83