人教版二年级数学上册易错题
人教版二年级数学上册易错题一11、判断题:数学书表面的直角比黑板上的直角小。() 几个加数连加可以用乘法计算。( ) 6与5的和是30.( ) 7个6相加的和是13.( ) 三角形是由3条线段围成的。( ) 一把扇子有三个角。( ) 长方形和正方形都有四个直角。( ) 当钟面上是三点和九点的时候钟面是直角。( ) 12、画一个有直角的三角形。 13、4+4=( )×( ) 14、补充口诀:五五( )15、 ( )×( )=( ) 16、3个4相加,和是多少? 17、小白兔一共有几只?小灰兔一共有几只?两种兔一共有几只? 1...
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