二年级上册数学必考错题整理
二年级上期数学错题整理1、在横线上画,是的5倍,有()个。2、()与4相加是20,()个4相加是20。3、4和6相乘可以写成(),也可以写成()。4、2个5和5个2用同一句口诀计算,表示的意义相同。()5、口诀“四五二十”表示4个5相乘的积是20。()6、锐角都比钝角小。()7、钝角都比锐角大。()8、比钝角小的都是直角。()9、比锐角大的都是钝角。()10、直角都比锐角大。()11、每一句乘法口诀都能写出两道乘法算式。()12、4+4+4+4+4+3可以改写成算式()或()13、小明家住在5楼,每上一层楼需1分钟,小明从一楼走到五楼需要几分钟?14、小亮想钉板凳,板凳面厚6里面。现有下面三种...
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