0.25×31.4×1.6的简便计算

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0.25×31.4×1.6的简便计算0.25×31.4×1.6的简便计算0.25×31.4×1.6的简便计算0.25×31.4×1.6=0.25×(4×0.4)×31.4=0.4×31.4=12.56

0.25×31.4×1.6的简便计算
0.25×31.4×1.6的简便计算

0.25×31.4×1.6的简便计算
0.25×31.4×1.6
=0.25×( 4×0.4)×31.4
=0.4×31.4
=12.56

0.25*31.4*4*0.4=1*31.4*0.4=12.56