下面图形中两个平行四边形的面积相等吗？它们的面积各是多少？我发现：等底等高的平行四边形 ．
直接写得数0.4+= ×= ÷= 25%×4= ÷7=3.14×32= 1﹣80%= ××15= ×= 3000×40%=
×= ÷= ×= 2×= ÷=÷3= += ﹣=
直接写出得数3×= ×= ×18= ×= = ÷= ÷= 3×= ．
直接写得数．= = = == = = =
12+9.9= 1÷0.25= ÷=×50%= ﹣= （0.75﹣）×96=
= 
×
÷
= 25%×4= 
÷7=
×
×15= 
×
= 3000×40%=
×
= 
÷
= 
×
= 
=
÷3= 
+
= 
﹣
=
= 
×
= 
×18= 
×
= 
= 
÷
= 
÷
= 3×
= ．
= 
= 
= 
=
= 
= 
= 
=
÷
=
×50%= 
﹣
= （0.75﹣
）×96=
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