下列说法:①若|x|+x=0,则x为负数;②若-a不是负数,则a为非正数;③|-a2|=(-a)2;④若
,则
=-1;⑤若|a|=-b,|b|=b,则a≥b.
其中正确的结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0219208c068423dd31f170b6fc5edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201f3f1480e5ca0e3a90816f4b529589.png)
其中正确的结论有( )
A.2个 | B.3个 | C.4个 | D.5个 |
更新时间:2021-01-14 11:42:32
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名校
【推荐1】下列说法正确的是( )
①最大的负整数是
;②数轴上表示数2 和
的点到原点的距离相等;③当
时,
成立;④a的倒数是
;⑤
和
相等.
①最大的负整数是
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A.2 个 | B.3 个 | C.4 个 | D.5 个 |
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【推荐2】如图,数轴上的
四点所表示的数分别为
,且
为原点.根据图中各点位置,下列式子:①
;②
;③
;④
中与
的值相同的有( )个
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/75737605-5171-48f1-a551-c1d9f32fa0fe.png?resizew=220)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/75737605-5171-48f1-a551-c1d9f32fa0fe.png?resizew=220)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】已知
,
,那么
的末位数字是( ).
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A.3 | B.5 | C.7 | D.无法确定 |
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【推荐2】已知一列数
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A.4042 | B.![]() | C.![]() | D.![]() |
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