简便算法:125×128×25×5=?

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简便算法:125×128×25×5=?
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简便算法:125×128×25×5=?
简便算法:125×128×25×5=?

简便算法:125×128×25×5=?
125×128×25×5
=125*8*4*4*25*5
=1000*100*4*5
=100000*4*5
=100000*20
=2000000

125×128×25×5=5×25×2×4³×25×5=2×25³×4³=2×(25×4)³=2000000