李叔叔用长40米的篱笆围了一块正方形地，这块地的面积是多少平方米？
直接写出得数
11﹣1.1= 1.26÷0.3= 12.5×
= 13÷39=
1.5×0.2= 87.5%×
= 2﹣
=
=
直接写结果．
14.6﹣6=
+
= 0.21+
+0.79=
×
= 5.47﹣1.8﹣3.2=﹣0.25= 0.5÷
=（
+
）×63= 0.1：
= 1.25××8=
直接写出得数．
1.39+0.11= 0.08×0.5= 2.6﹣1.7= 85÷5=（
+
）×8=
4÷
=
÷
=
﹣0.9=+50%= 6.5×0.2=
口算
35+17= 11﹣0.6=
+
=
﹣
=
58﹣39= 32.8÷4=
﹣
=
=
4.6+3.2= 2.5×40=
×
=
+
=
0.43×3= 0÷5.8= 9
=
÷1=
直接写出得数．
19.3﹣2.7=
+
=×
= 5.1÷0.01=
11×
=
÷
= 15.7﹣7.5=（3.5%﹣0.035）÷
=