0.25 x 7.5 x 0.5简便算法

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0.25x7.5x0.5简便算法0.25x7.5x0.5简便算法0.25x7.5x0.5简便算法0.25x7.5x0.5=0.125x7.5=0.125x(8-0.5)=0.125x8-0.125x0

0.25 x 7.5 x 0.5简便算法
0.25 x 7.5 x 0.5简便算法

0.25 x 7.5 x 0.5简便算法
0.25 x 7.5 x 0.5
=0.125x7.5
=0.125x(8-0.5)
=0.125x8-0.125x0.5
=1-0.0625
=0.9375

0.125×0.25×0.5×6.4 =0.125×8×0.25×4×0.5×0.2 =1×1×0.1 =0.1 0.125×0.25×0.5×6.4 =0.125×8×0.25×4×

1/4x30/4x1/2=30/16=15/8

1/4x30/4x1/2=30/16=15/8