一年级数学下册第1单元《认识图形(二)》习题2新人教版.doc

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1认识图形(二)一、我会填。1.我们所学的平面图形有( )种,分别是( )形、 ( )形、 ( )形、( )形、 ( )形。2.七巧板是由( )种图形组成的,其中有( )个三角形,( )号和( )号图形,www.zzstep*.#%com&( )号和( )号图形是完全一样的。3.正方体的每个面都是( )形。4. 上图中,长方形有( )个,正方形有( )个,三角形有( )个,平行四边形有( )个。5.红领巾是( )形,课桌面是( )形。二.它们折出来是什么样子?连一连。2三、我会判断。1.魔方的六个面都是正方形。 ( )2.两个一样大的正方形可以拼成一个长方形。 ( )3.长方体的六个面一定都是长方形。 ( )4.两个三角形可以拼成一个四边形。 ( )四、下面的图形都是七巧板拼成的,像什么?你能拼出来吗?试试看。五、根据下面前 3 组图形的拼组规律,想一想接着怎么拼。3参考答案 一、1. 5 长方、正方、平形四边、三角、圆(顺序不唯一)2. 3 5 1、2 4、63. 正方4 3 0 2 15三角 长方二、解析:让学生拿纸实际的折一折,加深对折纸的认识和理解。三、1. 2. 3. 4.四、鹅 狐狸(答案合理即可)五、解析:考察对图形的认识和排列规律,本题是顺时针旋转的规律所得。

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