如题所述
第1个回答 2020-08-12
1.25×2.5×4.8
=1.25×2.5×6×0.8
=(1.25×0.8)×(2.5×6)
=1×15
=15本回答被网友采纳
=1.25×2.5×6×0.8
=(1.25×0.8)×(2.5×6)
=1×15
=15本回答被网友采纳
第2个回答 2020-08-12
1.25*2.5*4.8
=1.25*(2.5*4)*1.2
=(1.25*2)*10*0.6
=2.5*10*0.6
=15
=1.25*(2.5*4)*1.2
=(1.25*2)*10*0.6
=2.5*10*0.6
=15
第3个回答 2020-08-12
1.25*2.5*4.8
=(1.25*0.8)*(6*2.5)
=1*15
=15
=(1.25*0.8)*(6*2.5)
=1*15
=15