×3.2=
+=
×=
÷0.6=
0.23=
9兀=
1-÷=
3×÷3×=
×()×11 ×99+
16.58-(5.35+4.58) 26×
÷=18 x-75%x=
, 0.25,, , 0.625,75%,,1。(括号里填最简分数
或小数和百分数)