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3.14x12.5竖式

解:如图

3.14*12.5=39.25

3.14x12.5x0.08=3.14x(12.5x0.08)=3.14*1=3.14

12.5

0.34x12.5列竖式计算0.34*12.5=4.250

3.14x12.5%+6.8%x1/8=(3.14+6.8%)x1/8=3.82x1/8=0.4775应该是:3.14x12.5%+8.6%x1/8=(3.14+8.6%)x1/8=4x1/8=0.5

0 . 3 2X 1 . 2 5 ------------------- 1 6 0 6 43 2-------------------- 4 . 0 0 0

17.8*12.5=8*2.225*12.5=2.225*(8*12.5)=2.225*100=222.5

3.17,,用计算器算啊

3.14*32*2.5*12.5简便计算解:3.14*32*2.5*12.5=3.14*4x8*2.5*12.5=3.14*(4*2.5)*(8x12.5)=3.14x10x100=3140

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