小学三年级上册冀教版数学第三单元测试卷.1含答案
第三单元测试卷一、下面哪些图片是对称的?在下面的( )里画“√”,不是的画“×”。二、这些现象哪些是“平移”现象?哪些是“旋转”现象?填一填。1.张叔叔在笔直的公路上开车,方向盘的运动是( )现象。2.妈妈用拖布擦地,是( )现象。3.自行车的车轮转了一圈又一圈是( )现象。4.电梯的上下运动是( )现象。5.时钟的时针、分针、秒针的运动是( )现象。三、填空题。1.如果把一个图形沿着( )对折,( )的图形能够( ),这个图形就是( )图形,( )叫做对称轴。2.正方形、长方形、圆都是( )图形。3.五角星( )(填“是”或“不是”)轴对称图形。4.蜻蜓左...
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