4*0.6+13/25*0.4+13/25*0.6简算
问题描述:
4*0.6+13/25*0.4+13/25*0.6简算
简算,谢
答
=4*0.6+13/25*(0.4+0.6)
=4*0.6+13*0.04
=4*0.6+4*0.13
=4*(0.6+0.13)
=4*0.73
=2.92