1 . 一个四位正整数
的各数位上的数字都不相同且都不为零,并满足千位上的数字与百位上的数字之和为
,且十位上的数字与个位上的数字之和为
,则称
为“七夕数”,将“七夕数”
的千位上的数字与十位上的数字交换、百位上的数字与个位上的数字交换得到一个新的四位正整数
,则称这个数
为M的“七夕佳数”,规定
,例如:四位正整数
,∵
,
,∴
是“七夕数”,此时
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a973ad8516cd7318adc3b1929989f502.png)
______ ;若“七夕数”
满足
能被
整除,则满足条件的四位正整数
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b763b6f4f86b652af33e33eeb6d91796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b763b6f4f86b652af33e33eeb6d91796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71f45cbf0a158765ad8380755b02240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683a7514f55d0a3b55c29b93f69dd8c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860df8574d069e3781cc8f279ce9e4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944530a47fa883111ca4e37a2126b759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683a7514f55d0a3b55c29b93f69dd8c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3363ad87b6ecba7be32cd210d18555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb78072816d7b885d9110046d425e3bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a973ad8516cd7318adc3b1929989f502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc64983d9436891923512f56e33d1409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2 . 如图,数轴上有A,B,C三点,表示实数1和
的对应点分别为A,B,点A到B的距离与点C到原点O的距离相等,设A,B,C三点表示的三个数之和为m.
的长.
(2)求m的值.
(3)若数轴上点D表示的数为x,且满足
.请求出x的值,并在坐标轴上标出点D的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求m的值.
(3)若数轴上点D表示的数为x,且满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c986fae969e23d26a2b6aec70817c5ff.png)
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3 . 计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6041c7e529ddfa865d7e9d256852696.png)
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4 . 如图,数轴上点
两点所表示的数分别为
,下列各式中:①
;②
;③
;④
,计算结果一定是正数的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa791a760ad60193919b003880d3c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09ffc1644c7029219b88232145abbdf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1487f00fd160d1ecbdfc593813dcd3b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30e81a40284bf1a8c99227a067e8ef.png)
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7 . 计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad35d936005eb368f7b5f6de5ffac88.png)
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昨日更新
|
63次组卷
|
2卷引用:2024年江苏省苏州市姑苏区中考数学一模试题
8 . 已知
,则
的整数部分为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5149178170347ec642b8d6b110cd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c16845780c9a6979594d1452b49410.png)
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9 . 已知
是
的整数部分,
,其中
是整数,且
,那么以
为两边的直角三角形的第三边的长度是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cee6655a37fc8243928b5dbb09fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d9b9964fa42012c37edabc5ddf2484c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3138c30b73a9ebdc65a55cf008eb36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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10 . 【阅读理解】
的整数部分是2,则
的小数部分可以表示为
.
【问题解决】
(1)若
,且
是整数,求
的值;
(2)已知
的小数部分是
,
的小数部分是
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6011af1246472cfa38d0a21a320ecac.png)
【问题解决】
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f35304eba0df549a3341900e3b6f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef096e512430bb74dfe3f1437ab36ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26820c382733fbd78795b8c3af69828b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99a9f056ed82bb7ef2b330ea8739f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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