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125x64x25x5用拆分法简算

125x25x64x5=125x25x8x4x2x5=(125x8)x(25x4)x(2x5)=1000x100x10=1000000

125*25*64*5=125*25*2*4*8*5=(125*8)*(25*4)*(2*5)=1000*100*10=1000000

=125*25*8*8*5=125*8*(25*8)*5=1000*200*5=200000*5=1000000

125x64x25x5=(125x8)x(4x25)x(5x2)=1000x100x10=1000000

125x25x5x64=(125*8)*(25*4)*(5*2)=1000*100*10=1000000

125x64x25=125x8x8x25=1000x200=200000

5x64x25x125=5*2*(4*25)*(8*125)=10*100*1000=1000000

64x25x125x5=(8*4*2)*25*125*5=(8*125)*(4*25)*(2*5)=1000*100*10=1000000

解题关键:64=2x4x8937x125x25x64x5=937x125x25x(2x4x8)x5=937x(125x8)x(25x4)x(5x2)=937x1000x100x10=937000000

5x64x25x125=5*8*8*25*125=(8*125)*(8*25)*5=1000*200*5=200000*5=1000000

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