1 . 写出一个绝对值不大于2的无理数________ .(写出一个即可)
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2 . 下列四个命题,其中是真命题的是______ .
①两条直线被第三条直线所截,内错角相等;
②同一平面内,垂直于同一条直线的两条直线互相平行;
③无理数都是无限不循环小数;
④负数没有立方根.
①两条直线被第三条直线所截,内错角相等;
②同一平面内,垂直于同一条直线的两条直线互相平行;
③无理数都是无限不循环小数;
④负数没有立方根.
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名校
3 . 下列5个数:0,
,
,
,
中,其中无理数有______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94de4f4d291d88b8209e2b054a0c16b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598564aec706dff769c5afc4c378c572.png)
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4 . 下列各数:
其中,无理数有____ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19472adf9d135959a99b6747b64f48a9.png)
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5 . 在
,
,
,
中,无理数是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac09de324e9dfb92291b1a3f11953441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a58c8aa51e4bfa584ebd63e2299776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e200bdc0929ef194f9f8cdc5e65ea87.png)
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6 . 了解无理数与实数的概念
(1)______ 小数叫做无理数;
(2)有理数和_____ 统称为实数.
(1)
(2)有理数和
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7 . 将下列各数填入相应的括号里:
,
,0,
,
,
,
,
,
,
.
负数集合
___________
;
分数集合
___________
;
正整数集合
___________
;
无理数集合
___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08450eeafc3389d99101acb274f91f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77424dbdd740737b4ec75d62cdd08b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd25aae4e93ac1474181c5e35e1a551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ff5297ffdb94fe17ddc82c03044a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a0097918bf5505a924b7756117bb22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0b48a171e5c6e98820f7b40b67b25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5f6d370a9e9ea9962abc3c361d1910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9816d19151ebb23a5747c1e363c61e.png)
负数集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411cf850fd4ef2a3f344471fbe3a4308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f8457020e55058e76345ac87c1ab1c.png)
分数集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411cf850fd4ef2a3f344471fbe3a4308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f8457020e55058e76345ac87c1ab1c.png)
正整数集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411cf850fd4ef2a3f344471fbe3a4308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f8457020e55058e76345ac87c1ab1c.png)
无理数集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411cf850fd4ef2a3f344471fbe3a4308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f8457020e55058e76345ac87c1ab1c.png)
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2022-11-15更新
|
119次组卷
|
3卷引用:江苏省泰州市靖江市滨江学校2022-2023学年七年级上学期11月月考数学试题
8 . 在下列数字中:①
,②0,③
,④
,⑤
;⑥2.101001000…,⑦32%;无理数有 _____ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e953dc720a6e176a2f47c02b2a4eac28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68e594212cf2a24501a758adfcae885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2390914e85f3f61ada51f4eeba5eb902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598564aec706dff769c5afc4c378c572.png)
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9 . 绝对值与倒数均等于它本身的数是______ ,请写出一个在
和
之间的无理数______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
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10 . 下列说法:①任何无理数都是无限不循环小数;②实数与数轴上的点一一对应;③在1和3之间的无理数有且只有
这4个;④近似数
所表示的准确数
的取值范围是
;⑤a、b互为相反数,则
.其中正确的是________ .(填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5baa7f20214f848f3daa5cb0303c5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc47435087804ba5a3c3bfe19d9fc953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513b09fffed1f14fc8dd7548c17e3983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4606b490519d8c36c996b6ef6af05da.png)
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2022-11-07更新
|
70次组卷
|
2卷引用:安徽省滁州市定远县城西六校2022-2023学年九年级下学期3月第一次检测数学试题