怎么简算14.30.27.5-100.154.3 怎么简算

分类: 作业答案 • 2021-12-18 16:31:48

问题描述：

怎么简算
14.3*0.2*7.5-10*0.15*4.3 怎么简算

答

14.3*0.2*7.5-10*0.15*4.3
=14.3*(0.2*7.5)-(10*0.15)*4.3
=14.3*1.5-1.5*4.3
=(14.3-4.3)*1.5
=10*1.5
=15

答

14.3*0.2*7.5-10*0.15*4.3
=10*0.2*7.5+4.3*0.2*7.5-10*0.15*4.3
=10*1.5+4.3*1.5-1.5*4.3
=10*1.5
=15

答

14.3*0.2*7.5-10*0.15*4.3
=14.3*1.5-1.5*4.3
=1.5*(14.3-4.3)
=1.5*10
=15

怎么简算14.3*0.2*7.5-10*0.15*4.3 怎么简算