看下图：两个长方形长的比是3：2，宽的比是4：3，已知阴影部分面积为2平方厘米，则大长方形的面积是多少？
+= ﹣= ×= 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=
直接写出得数．﹣= ÷6= ÷= 6×=×= ﹣= ×= ÷=
直接写得数：2.5×104= = = ÷8=368﹣199= 18÷4+6= ×16= 1.2÷10%== ﹣+=
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= 14÷
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÷2= 
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×1.3= 
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÷6= 
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= 6×
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﹣
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×
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×16= 1.2÷10%=
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