8.6×5.4+0.86+86×0.45的简便方法?
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8.6×5.4+0.86+86×0.45
=0.86×10×5.4+0.86+0.86×100×0.45
=0.86×(10×5.4+1+100×0.45)
=0.86×100
=86
=0.86×10×5.4+0.86+0.86×100×0.45
=0.86×(10×5.4+1+100×0.45)
=0.86×100
=86
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8.6×5.4+0.86+86×0.45
=8.6×5.4+8.6*0.1+8.6×4.5
=8.6*(5.4+0.1+4.5)
=8.6*10
=86
=8.6×5.4+8.6*0.1+8.6×4.5
=8.6*(5.4+0.1+4.5)
=8.6*10
=86
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8.6×5.4+0.86+86×0.45
=8.6×5.4+8.6×0.1+8.6×10×0.45
=8.6×(5.4+0.1+4.5)
=8.6×10
=86
=8.6×5.4+8.6×0.1+8.6×10×0.45
=8.6×(5.4+0.1+4.5)
=8.6×10
=86
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