某工厂每盒可以装4节电池，有540节电池，130个盒子够装吗？
看谁算得又对又快．======．
3与4的倒数之差是多少？
算一算．+=﹣=+=+=﹣=﹣=
+= 1﹣=+=+= 1﹣=+=﹣=﹣=
直接写出得数．﹣=+=﹣=+=﹣=﹣=
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