2.4*0.19+0.24*8.1如何简便计算
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2.4*0.19+0.24*8.1如何简便计算
2.4*0.19+0.24*8.1如何简便计算
2.4*0.19+0.24*8.1如何简便计算
=0.24×10×0.19+0.24×8.1
=0.24×1.9+0.24×8.1
=0.24×(1.9+8.1)
=0.24×10
=2.4
2.4*(0.19+0.81)
原式=0.24*1.9+0.24*8.1
=0.24*(1.9+8.1)
=2.4
2.4*0.19+0.24*8.1
=0.24*1.9+0.24*8.1
=0.24*(1.9+8.1)
=0.24*10
=2.4
原式=2.4*0.19+2.4*0.1*0.81*10=2.4*0.19+2.4*0.81=2.4*(0.19+0.81)=2.4*1=2.4