简算
第1个回答 2009-09-29
3.6x42.3x3.75-12.5x0.423x28
=4.23*(36*3.75-5*7)
=4.23*5*(36*0.75-7)
=42.3/2*(9*3-7)=42.3*10
=423本回答被提问者采纳
=4.23*(36*3.75-5*7)
=4.23*5*(36*0.75-7)
=42.3/2*(9*3-7)=42.3*10
=423本回答被提问者采纳
第2个回答 2009-09-29
3.6x42.3x3.75-12.5x0.423x28
=4.23*(36*3.75-1.25*28)
=4.23*(108+27-28-7)
=4.23*(80+20)
=423
=4.23*(36*3.75-1.25*28)
=4.23*(108+27-28-7)
=4.23*(80+20)
=423
第3个回答 2009-09-29
3.6*42.3*3.75-12.5*0.423*28
=3.6*42.3*3.75-12.5*42.3*0.28
=3.6*42.3-12.5*0.28
=152.28-3.5
=148.78
=3.6*42.3*3.75-12.5*42.3*0.28
=3.6*42.3-12.5*0.28
=152.28-3.5
=148.78
第4个回答 2009-09-29
423
