如图,一动点的初始位置位于数轴上的原点,现对该动点做如下移动:第1次从原点向右移动1个单位长度至
点,第2次从
点向左移动3个单位长度至
点,第3次从
点向右移动6个单位长度至
点,第4次从
点向左移动9个单位长度至
点,…依此类推,移动2020次后该动点在数轴上表示的的数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2020/2/21/2404028164792320/2404600084447232/STEM/54978831f28d4a75b8cf54364472d7b0.png?resizew=406)
更新时间:2020-02-22 17:54:18
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【推荐1】一只蚂蚁从数轴上一点
出发,爬了
个单位长度到了点
,则点
所表示的数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
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【推荐2】在数轴上,表示
的点
开始移动,第1次先从点
向左移动1个单位至点
,第2次从
向右移动2个单位至点
;第3次从点
向左移动3个单位至点
,第4次从点
向右移动4个单位至点
;按此规律移动,则点
在数轴上表示的数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4f47d27d32b7f205cd916f49623f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
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