猪妈妈带着孩子去野餐，如果每张餐布周围坐4只小猪就有6只小猪没地方坐，如果每张餐布周围多坐一只小猪就会余出4个空位子，问：一共有多少只小猪，猪妈妈一共带了多少张餐布？
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=
直接写出得数．﹣=÷6=÷= 6×=×=﹣=×=÷=
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