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0.125x7.41x80用拖式计算

0.125x7.41x80 =0.125x80x7.41 =10x7.41 =74.1

0.125x6.49x80 =0.125*80*6.49 =10*6.49 =64.9

=0.125×80×7.41 =10×7.41 =74.1

请问下面这道题怎么做简便计算0.125X7.41X80 0.125X7.41X80 =7.41*(0.125*80) =7.41*10 =74.1

原式 =0.125x7.41x80 =(0.125x80)x7.41 =10x7.41 =74。1 供参考。

这种题没有列竖式的意义, 0.125×7.41×80=7.41×(0.125×80)=7.41×10=74.1, (3.2+0.56)÷0.8=3.2÷0.8+0.56÷0.8=4+0.7=4.7,

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