更新时间2019-11-07 10:15:03
解:76X12,5X64X0.25
=76X12,5X(8X8)X0.25
=76X(12.5X8)X(8X0.25)
=76X100X2
=152X100
=15200
76×12.5×64×0.25
=9.5×8×12.5×16×4×0.25
=9.5×100×16
=(10-0.5)×1600
=16000-800
=15200
76×12.5×64×0.25
=76×12.5×8×8×0.25
=76×(12.5×8)×(8×0.25)
=76×100×2
=15200