Chrome，
QQ浏览器
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![『获奖』青岛版小学数学五年级下册《3三（同分母分数加减混合运算）》[步老师]【市一等奖】优质课_优质课公开课教学视频](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Fbeb86fce0b19932bf126ca02c2afcc8fe5bb91af.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：0 时间：2025-10-10简介： -
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![合集：五年级上册。。2 [2]分数加减 li 1](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F79b72ae365e653aee18df391ac1ac608c249530f.jpg%40672w_378h_1c_%21web-search-common-cover)
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![『获奖』青岛版小学数学五年级下册《3三（同分母分数加减混合运算）》[步老师]【市一等奖】优质课_优质课公开课教学视频](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Fbeb86fce0b19932bf126ca02c2afcc8fe5bb91af.jpg%40672w_378h_1c_%21web-search-common-cover)
![合集：五年级上册。。2 [2]分数加减 li 1](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F79b72ae365e653aee18df391ac1ac608c249530f.jpg%40672w_378h_1c_%21web-search-common-cover)
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