0.36+0.64*0.65简便计算怎么算请教
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2016-09-19
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0.36+0.64×0.65
=0.36+0.32×2×0.65
=0.36+0.32×1.3
=0.04×(9+8×1.3)
=0.04×(9+10.4)
=0.04×19.4
=0.776
=0.36+0.32×2×0.65
=0.36+0.32×1.3
=0.04×(9+8×1.3)
=0.04×(9+10.4)
=0.04×19.4
=0.776
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