每个小方格表示1cm2，数出下面各个图形的周长和面积．
图①的周长是 cm，面积是 cm2
图②的周长是 cm，面积是 cm2
图③的周长是 cm，面积是 cm2．
直接写出得数：
103.5﹣83=
÷2= 1﹣40%=
﹣
= 0÷
= 1﹣25%﹣70%=
直接写得数
2.2+3.57= 11.3﹣8.6= 3.25×4= 14÷35=
÷6=
﹣
=
×
=
÷
=
+
=
﹣
=
直接写出得数．
25+7.5= 200×3.6= 217﹣18=
+
×5=
42÷0.02= 3﹣
=÷
=（
+
）×56=
直接写出得数．
0.78+0.22=
=
= 0÷
=
3+5%+17%=
= 0.43+0.17+0.39= 8.4+
=
0.1÷0.01= 1.2×
= 32×2.5=
=
742﹣299= 101×9.2﹣9.2=
=
=
直接写出得数．
①0.125×8= ②3.27+1.83= ③10÷10%= ④
÷
=
⑤0.21+
+0.79= ⑥（
﹣0.4）×123= ⑦
×
= ⑧
×4÷4=