2.5乘以0.4再加上2.8,积多少?
问题描述：
2.5乘以0.4再加上2.8,积多少?
答
2.5*0.4+2.8
=1+2.8
=3.8
2.5乘以0.4再加上2.8,积多少?
2.5*0.4+2.8
=1+2.8
=3.8