Ben had five comic books.He lent three of them to Nancy.Three days later,Nancy returned them to him and gave him two of
问题描述:
Ben had five comic books.He lent three of them to Nancy.Three days later,Nancy returned them to him and gave him two of her own.Now,how many comic books does Ben have?
答
本有5本连环画,他借了其中的3本给了南希.三天以后,南希把书还给了本同时又把自己的两本连环画给了本.现在本有多少本连环画了?
5-3+3+2=7本