(2*4*8*1.6*3.2)*(2.5*6.25*0.125*0.25) 简便

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(2*4*8*1.6*3.2)*(2.5*6.25*0.125*0.25) 简便

(2*4*8*1.6*3.2)*(2.5*6.25*0.125*0.25)
=(2×2.5)×(8×0.125)×(1.6×6.25)×(8×4×0.25)
==(8×2×2.5)×(8×0.125)×(1.6×6.25)×(4×0.25)
=5×8×1×10×1
=400