递等式计算:48x0.25x0.125=6x8x0.25x0.125=(6x0.25)x(8x0.125)=1.5x1=1.5---------------8.7x9.9+8.7x0.1= 8.7x(9.9+0.1)=8.7x10=87
递等式计算:48x0.25x0.125=6x8x0.25x0.125=(6x0.25)x(8x0.125)=1.5x1=1.5---------------8.7x9.9+8.7x0.1= 8.7x(9.9+0.1)=8.7x10=87
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