下列各式中,不正确的一项是( )
A.(-3)-5=(-3)+5 | B.3-(-4)=3+4 |
C.![]() | D.-53=-5×5×5 |
更新时间:2018-11-12 13:10:52
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适中
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【推荐1】如图1,点A,
,
是数轴上从左到右排列的三个点,分别对应的数为
,
,4,某同学将刻度尺如图2放置,使刻度尺上的数字0对齐数轴上的点A,发现点
对应刻度
,点
对应刻度
.则数轴上点
所对应的数
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/69c3b4d2-db9d-4b07-8b90-f354cfa13946.png?resizew=550)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d868093e1816bb4a73ae608e857f8c.png)
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A.2 | B.1 | C.0 | D.![]() |
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【推荐2】如果在数轴上表示a,b两个数的点的位置如图所示,下列各式正确的是( )
![](https://img.xkw.com/dksih/QBM/2019/6/5/2218897947836416/2223146591862784/STEM/45f66c5944a448e3a153d0632e74bb40.png?resizew=149)
![](https://img.xkw.com/dksih/QBM/2019/6/5/2218897947836416/2223146591862784/STEM/45f66c5944a448e3a153d0632e74bb40.png?resizew=149)
A.|a|<|b| | B.b﹣a<0 | C.ab>0 | D.![]() |
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【推荐2】若﹣1<a<0,则a,
,a2由小到大排列正确的是( )
![](https://img.xkw.com/dksih/QBM/2016/9/14/1574241173118976/1574241179361280/STEM/392d292e122e4be8b3346f7660c5698c.png)
A.a2<a<![]() | B.a<![]() | C.![]() | D.a<a2<![]() |
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