二年级数学(上册)第一单元人教版长度单位的练习
二年级上册第一单元长度单位8月28日作业一、填一填。(34分)1、量较长物体的长度,可以用()作单位。量较短物体的长度可以用()作单位。2、量物体的长度时,要把尺子的()刻度对准物体的一端,再看物体的另一端对着几。3、1米=()厘米400厘米=()米4、看一看,填一填。这支回形针长()厘米这支铅笔长()厘米。5、在()里填上合适的单位。(厘米或米)①一本书厚1()②手掌的宽约8()③操场长约60()④课桌的高65()⑤一条跳绳长2()⑥哥哥的身高1()28()⑦一幢楼高15()⑧一张单人床长2(),宽120()6、30米+8米=()米12厘米-7厘米=()厘米27厘米+6厘米=()厘米54米-...
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