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Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,11/7/2009,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,分数的加减,冀教版三年级数学下册,学习目标,经历自方探索两个分数相加等于,1,和相应的减法的过程。,会计算两个分数相加等于,1,和相应的减法。,每一个披萨都,平分成,8,块，,1块是,个,披萨。,1,8,披萨篇,桌上的披萨全部,合起来，,总共是多少,个,披萨？,披萨篇,3 块,3 块,4 块,10 块,8 块,1,个,披萨,10 块,1,个,披萨,2,8,个,披萨,披萨篇,3,8,3,8,4,8,10,8,2,8,8,8,2,8,1,披萨篇,凤梨酥篇,一共是几,盒,凤梨酥？,答案：,盒,9,12,1,凤梨酥篇,我们想吃,10,个，,是,盒,。,10,12,9,12,1,这一组吃完后,还,剩,几,盒,凤梨酥？,凤梨酥篇,9,12,1,9,12,1,盒,9,12,1,9,12,1,10,12,（）,9,12,1,盒,9,12,1,凤梨酥篇,9,12,1,12,12,9,12,21,12,9,12,1,10,12,（）,21,12,第1种,算法,10,12,（）,11,12,凤梨酥篇,1,10,12,2,12,9,12,1,10,12,（）,2,12,第2种,算法,9,12,（）,11,12,凤梨酥篇,10,12,不够,1,12,9,12,1,10,12,（）,1,第3种,算法,1,12,（）,11,12,9,12,凤梨酥篇,凤梨酥篇,我们想吃,10,个，是,盒,。,10,12,盒,9,12,1,1,2,3,4,5,6,7,8,9,10,1,5,4,3,2,9,8,7,6,10,1,2,3,4,5,6,7,8,9,10,5,4,3,2,9,8,7,6,10,8,12,1,2,3,4,5,6,7,8,9,10,5,4,3,9,8,7,6,10,7,12,1,2,3,4,5,6,7,8,9,10,5,4,9,8,7,6,10,6,12,1,2,3,4,5,6,7,8,9,10,5,9,8,7,6,10,5,12,1,2,3,4,5,6,7,8,9,10,9,8,7,6,10,4,12,1,2,3,4,5,6,7,8,9,10,9,8,7,10,3,12,1,2,3,4,5,6,7,8,9,10,9,8,10,2,12,1,2,3,4,5,6,7,8,9,10,9,10,1,12,1,2,3,4,5,6,7,8,9,10,10,12,12,1,2,3,4,5,6,7,8,9,10,11,12,吃完后,还剩,盒,凤梨酥.,11,12,第4种,算法,9,12,1,盒,我们想吃,10,个，,是,盒,。,10,12,我们想吃,3,个，,是,盒,。,3,12,凤梨酥篇,9,12,1,（）,第1种,算法,13,12,（）,8,12,10,12,（）,3,12,9,12,1,12,12,9,12,21,12,21,12,凤梨酥篇,（）,第2种,算法,3,12,（）,8,12,9,12,1,10,12,（）,3,12,11,12,凤梨酥篇,第3种,算法,盒,11,12,1,2,3,4,5,6,7,8,9,10,1,2,3,1,2,3,4,5,6,7,8,9,10,2,3,10,12,1,2,3,4,5,6,7,8,9,10,3,9,12,两组小朋友吃完后，,还剩,盒,凤梨酥,。,8,12,8,12,1,2,3,4,5,6,7,8,9,10,9,、静夜四无邻，荒居旧业贫。,2024/11/27,2024/11/27,Wednesday,November 27,2024,10,、雨中黄叶树，灯下白头人。,2024/11/27,2024/11/27,2024/11/27,11/27/2024 8:45:27 PM,11,、以我独沈久，愧君相见频。,2024/11/27,2024/11/27,2024/11/27,Nov-24,27-Nov-24,12,、故人江海别，几度隔山川。,2024/11/27,2024/11/27,2024/11/27,Wednesday,November 27,2024,13,、乍见翻疑梦，相悲各问年。,2024/11/27,2024/11/27,2024/11/27,2024/11/27,11/27/2024,14,、他乡生白发，旧国见青山。,27 十一月 2024,2024/11/27,2024/11/27,2024/11/27,15,、比不了得就不比，得不到的就不要。,十一月 24,2024/11/27,2024/11/27,2024/11/27,11/27/2024,16,、行动出成果，工作出财富。,2024/11/27,2024/11/27,27 November 2024,17,、做前，能够环视四周；做时，你只能或者最好沿着以脚为起点的射线向前。,2024/11/27,2024/11/27,2024/11/27,2024/11/27,9,、没有失败，只有暂时停止成功！。,2024/11/27,2024/11/27,Wednesday,November 27,2024,10,、很多事情努力了未必有结果，但是不努力却什么改变也没有。,2024/11/27,2024/11/27,2024/11/27,11/27/2024 8:45:27 PM,11,、成功就是日复一日那一点点小小努力的积累。,2024/11/27,2024/11/27,2024/11/27,Nov-24,27-Nov-24,12,、世间成事，不求其绝对圆满，留一份不足，可得无限完美。,2024/11/27,2024/11/27,2024/11/27,Wednesday,November 27,2024,13,、不知香积寺，数里入云峰。,2024/11/27,2024/11/27,2024/11/27,2024/11/27,11/27/2024,14,、意志坚强的人能把世界放在手中像泥块一样任意揉捏。,27 十一月 2024,2024/11/27,2024/11/27,2024/11/27,15,、楚塞三湘接，荆门九派通。,十一月 24,2024/11/27,2024/11/27,2024/11/27,11/27/2024,16,、少年十五二十时，步行夺得胡马骑。,2024/11/27,2024/11/27,27 November 2024,17,、空山新雨后，天气晚来秋。,2024/11/27,2024/11/27,2024/11/27,2024/11/27,9,、杨柳散和风，青山澹吾虑。,2024/11/27,2024/11/27,Wednesday,November 27,2024,10,、阅读一切好书如同和过去最杰出的人谈话。,2024/11/27,2024/11/27,2024/11/27,11/27/2024 8:45:28 PM,11,、越是没有本领的就越加自命不凡。,2024/11/27,2024/11/27,2024/11/27,Nov-24,27-Nov-24,12,、越是无能的人，越喜欢挑剔别人的错儿。,2024/11/27,2024/11/27,2024/11/27,Wednesday,November 27,2024,13,、知人者智，自知者明。胜人者有力，自胜者强。,2024/11/27,2024/11/27,2024/11/27,2024/11/27,11/27/2024,14,、意志坚强的人能把世界放在手中像泥块一样任意揉捏。,27 十一月 2024,2024/11/27,2024/11/27,2024/11/27,15,、最具挑战性的挑战莫过于提升自我。,十一月 24,2024/11/27,2024/11/27,2024/11/27,11/27/2024,16,、业余生活要有意义，不要越轨。,2024/11/27,2024/11/27,27 November 2024,17,、一个人即使已登上顶峰，也仍要自强不息。,2024/11/27,2024/11/27,2024/11/27,2024/11/27,MOMODA POWERPOINT,Lorem ipsum dolor sit amet,consectetur adipiscing elit.Fusce id urna blandit,eleifend nulla ac,fringilla purus.Nulla iaculis tempor felis ut cursus.,感谢您的下载观看,专家告诉,内容总结,分数的加减。经历自方探索两个分数相加等于1和相应的减法的过程。1块是 个披萨。88。是 盒。（）。1212。1212。（）。我们想吃10个，是 盒。吃完后,还剩 盒凤梨酥.。是 盒。（）。（）。还剩 盒凤梨酥。2022/4/142022/4/14Thursday,April 14,2022。2022/4/142022/4/142022/4/144/14/2022 8:11:09 PM。2022/4/142022/4/142022/4/14Apr-2214-Apr-22。2022/4/142022/4/142022/4/14Apr-2214-Apr-22。2022/4/142022/4/142022/4/14Apr-2214-Apr-22。2022/4/142022/4/142022/4/14Thursday,April 14,2022。2022/4/142022/4/142022/4/142022/4/144/14/2022。专家告诉,
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