如题所述
第1个回答 2022-05-18
125*78*9=(100+25)*(80-2)*(10-1)
=(8000-200+2000-50)*(10-1)
=(10000-250)*(10-1)
=100000-10000-2500+250
=90000-2500+250
=87500+250
=87750
=(8000-200+2000-50)*(10-1)
=(10000-250)*(10-1)
=100000-10000-2500+250
=90000-2500+250
=87500+250
=87750