二年级数学求比一个数多几应用题.ppt

1 、理解“求比一个数多几的数的应用题”的数量关系。 2 、知道求比一个数多几的数,用加法计算。 3 、提高分析问题、解决问题的能力。学习重点:分析数量关系。学习难点:理解数量关系,掌握解答方法。学习目标 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 复习: 第一行摆第二行摆算式: 6 - 4 = ? 2 思考: 1、和同样多的是哪部分? 2、比多的是哪部分? 3、比多几个?怎么列式? Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 1、比 5多4的数是多少? 2 、比 8多2的数是多少? 3 、比 30多7的数是多少? 4 、45比40多多少? 5 、一个数比 50多6,这个数是多少? 5 + 4 = 9 8 + 2 = 10 30 + 7 = 37 45 - 40 = 5 50 + 6 = 56 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 例4?(1)一班得了 12面小红旗,二班比一班多得 3面。二班得了多少面? ?读后你知道了社么? Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 一、想想下面两句话,说出什么和什么比,什么多?把多的分成哪两部分, 把这两部分合并在一起,就是什么的数量? 1、比多3只。 2、比多2棵。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 二、看图填空。()多,小鸭分( )部分, 一部分是和( )同样多的( ) 只,另一部分是比( )多的( ) 只。小鸭有( )只。算式: 小鸭两大鸭 2大鸭 57 2 + 5 = 7 (只) Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty