3.6÷0.4 + 2.3×6
= 3.6×2.5 + 2.3×6
= 6×1.5 + 6×2.3
= 6×3.8
= 22.8
3.6÷0.4+2.3×6等于22.8,先乘除后加减.
(3.6 ÷0.4)等于9
(2.3×6)等于13.8
最后9加13.8=22.8
其实可以化成36÷4+2*6+0.3*6=9+12+1.8=22.8,这个够简单了!
原式
=9+2.3x6
=3X(3十2.3x2)
=3x7.6
=22.8
36/4+(2+0.3)*6
=9+2*6+0.3*6
=9+12+1.8
=22.8