七年级数学上册第二章有理数2.2数轴评测练习(无答案)(新版)青岛版.doc

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1数轴【达标检测】1.下列各图中,是数轴的是( )2.指出数轴上各点分别表示什么数:3.用“”号或“”号填空(1)1_0; (2)0.1_8;(3)3.5_4.5; (4) _ 4.下列说法错误的是( ).所有的有理数都可以用数轴上的点表示.数轴上的原点用有理数 0 表示.数轴上表示 324的点在原点左边 324个单位长度处.在数轴上离开原点的距离越远的点表示的数越大5.画数轴,并在数轴上标出表示下列各数的点,再用“”把它们连接起来:6.数轴上表示-3 的点离开原点的距离是_个单位长度;数轴上与原点相距 3 个单位长度的点有_个,它们表示的数是_.7.到原点的距离小于 4 个单位长度的整数点有( ).8 个 .7 个 .6 个 .5 个8.一个点从数轴上表示1 的点出发,按下列条件移动两次后到达终点,说出终点表示什么数?(1)向右移动 3 个单位长度,再向左移动 5 个单位长度;(2)向左移动 4 个单位长度,再向右移动 1 个单位长度9.下列说法是否正确?为什么(1)在数轴上,表示-2 的点与原点的距离是 2 个长度单位;1233,120,45.2(2)在数轴上,与原点的距离是 2 的点所表示的数是-2;(3)在数轴上,原点及原点右边的点表示的数都是正数。10.在数轴上标出所有大于-3 并且小于 4 的整数所表示的点。10

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