如题所述
第1个回答 推荐于2016-12-01
（12.5+1.25）*0.8
=（12.5+1.25）*4*0.2
=（12.5*4+1.25*4）*0.2
=(50+5)*0.2
=11本回答被提问者采纳
=（12.5+1.25）*4*0.2
=（12.5*4+1.25*4）*0.2
=(50+5)*0.2
=11本回答被提问者采纳
第2个回答 2010-09-14
（12.5+1.25）*0.8=12.5*0.8+1.25*0.8=10+1=11
125*8=1000
125*8=1000
第3个回答 2010-09-14
12.5*0.8+1.25*0.8
=10+1
=11
=10+1
=11
