小白兔采蘑菇，晴天每天可采20朵，雨天每天可采12朵，它一连几天一共采112朵蘑菇，平均每天采14朵．在这几天中，有多少天是晴天？
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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