4.29*31+0.68*429+42.9*0.1,怎样简便就怎样计算

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4.29*31+0.68*429+42.9*0.1,怎样简便就怎样计算
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4.29*31+0.68*429+42.9*0.1,怎样简便就怎样计算
4.29*31+0.68*429+42.9*0.1,怎样简便就怎样计算

4.29*31+0.68*429+42.9*0.1,怎样简便就怎样计算
4.29*31+0.68*429+42.9*0.1
=4.29*31+68*4.29+4.29*1
=4.29*(31+68+1)
=4.29*100
=429

4.29*31+0.68*429+42.9*0.1
=4.29*31+68*4.29+4.29*1
=4.29*(31+68+1)
=4.29*100
=429

4.29*31+0.68*429+42.9*0.1
=4.29*31+0.68*100*4.29+4.29*10*0.1
=4.29*(31+0.68*100+10*0.1)
=4.29*(31+68+1)
=4.29*100
=429

429*0.31+0.68*429+429*0.01=429*(0.31+0.68+0.01)=429