0.84*1.2+8.4*0.88用简便算法,脱式.

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0.84*1.2+8.4*0.88用简便算法,脱式.0.84*1.2+8.4*0.88用简便算法,脱式.0.84*1.2+8.4*0.88用简便算法,脱式.0.84*1.2+8.4*0.88=0.84

0.84*1.2+8.4*0.88用简便算法,脱式.
0.84*1.2+8.4*0.88用简便算法,脱式.

0.84*1.2+8.4*0.88用简便算法,脱式.
0.84*1.2+8.4*0.88
=0.84*1.2+0.84*8.8
=0.84*(1.2+8.8)
=0.84*10
=8.4

0.84*1.2+8.4*0.88
=0.84*1.2+0.84*8.8
=0.84*(1.2+8.8)
=0.84*10
=8.4

0.84*1.2+8.4*0.88
=0.84*1.2+0.84*8.8
=0.84*(1.2+8.8)
=0.84*10
=8.4