0.9×26+1.8×37的简便算法

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0.9×26+1.8×37的简便算法0.9×26+1.8×37的简便算法0.9×26+1.8×37的简便算法0.9×26+1.8×37=0.9*2*13+1.8*37=1.8*13+1.8*37=1.

0.9×26+1.8×37的简便算法
0.9×26+1.8×37的简便算法

0.9×26+1.8×37的简便算法
0.9×26+1.8×37
=0.9*2*13+1.8*37
=1.8*13+1.8*37
=1.8*(13+37)
=1.8*50
=90

0.9×26+1.8×37
=0.9×26+0.9×74
=0.9×﹙26+74﹚
=0.9×100
=90

0.9*26+1.8*37=0.9*26+2*0.9*37=0.9*(26+2*37)=0.9*100=90