5.6*0.38+0.56*4.7+0.056*15 用简便方法怎么计算
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5.6×0.38+0.56×4.7+0.056×15
=5.6×0.38+5.6×0.47+5.6×0.15
=5.6×(0.38+0.47+0.15)
=5.6×(0.85+0.15)
=5.6×1
=5.6
=5.6×0.38+5.6×0.47+5.6×0.15
=5.6×(0.38+0.47+0.15)
=5.6×(0.85+0.15)
=5.6×1
=5.6
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