王伯伯用篱笆靠墙圈出一块菜地（如图），篱笆长100米，求这块菜地的面积？
直接写出得数．+=﹣= 3×=÷=+=÷= 1﹣=×=
直接写出得数．==== 2÷3====
+=﹣=×= 14÷=÷=×=÷= 6×=
直接写得数： 1﹣= 9×=÷2=÷== 1=×1.3=×=
直接写出下面各题的得数．÷=== 1.25×0.8=== 1﹣30%= 5.4÷0.3= 9﹣0.56=
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= 1﹣
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= 14÷
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= 6×
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= 9×
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÷2=
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= 1
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×1.3=
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