一块长方形铁皮（如图），长25厘米，宽15厘米，从四个角分别剪去边长2厘米的小正方形，然后把四周折起来，做成没有盖子的铁盒，请你帮忙计算一下：做这样一个盒子至少需要多少铁皮？铁盒的容积是多少？
直接写得数．÷13=×9=÷=﹣×0=+= 6÷=﹣=×=×= 0÷=+16=÷=
直接写出得数． 50%+6=×= 4÷0.5= 28×25%= 95%+5=+= 6.9÷23= 100×0.4=
直接写出得数====+=== 1÷===
直接写出得数．×16= 10÷= 12÷=×=×=÷3=×=×=
6×=+=×= 3﹣=÷= 1÷=÷=﹣=×14=÷12=
÷13=
×9=
÷
=
﹣
+
=
﹣
=
×
=
×
=
=
+16=
÷
=
×
= 4÷0.5= 28×25%=
+
= 6.9÷23= 100×0.4=
=
=
=
=
+
=
=
= 1÷
=
=
=
×16= 10÷
= 12÷
=
×
=
×
=
÷3=
×
=
×
=
=
+
=
×
= 3﹣
=
÷
=
=
÷
=
﹣
=
×14=
÷12=
粤公网安备 44130202000953号