(21.5-21)*25*0.5+25*0.4 等于多少
问题描述：
(21.5-21)*25*0.5+25*0.4 等于多少
答
原式=0.5*25*0.5+25*0.4
=25*0.25+25*0.4
=25*(0.25+0.4)
=25*0.65
=16.25
答
(21.5-21)*25*0.5+25*0.4=0.5*25*0.5+10=7.5*0.5+10=3.75+10=13.75
答
(21.5-21)*25*0.5+25*0.4 等于多少
= 0.5 x 25 x 0.5 + 25 x0.4
= 25 x 0.25 +25 x 0.4
= 25 x (0.25+0.4)
= 25 x 0.65
= 65 x 0.25
= 65 ÷4
= 16.25
答
=0.5*25*0.5+25*0.4=1+10=11