人教版二年级数学上册第一二单元练习题
人教版二年级上册第一二单元练习题一、计算下面各题。 (1)5厘米+36厘米=( ) (2)80厘米-45厘米=( ) (3)27米+30米=( ) (4)100米-38米=( )二、填上合适的单位。 (1)火柴棒的长度是5( )。 (2)小名的身高130( )。 (3)操场的跑道长度是400( )。 (4)一棵杨树高12( )。三、判断(对的画“√”,错的画“×”)。 ①你家里的床长2米。 ( ) ②墨水瓶的高度是6米。( ) ③小红身高150厘米,实际上就是1米50厘米。( ) ④一座大楼高10米。( )四、下面的图形中,哪些是线段,把它的序号填在括号里。() (...
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