1 . 计算:
(1)
×
÷
;
(2)(
﹣
)×
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cee6655a37fc8243928b5dbb09fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde029ac94c601540583c64bc48c17bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
(2)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea872287a155776bf38d4a4cab7e464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde029ac94c601540583c64bc48c17bb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edea29a97736e2155a352eae47e71b3.png)
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2 . 如图,矩形
中,点E,F,G分别为
边上的点,点E是
的中点,
,
,在
中,
,
,矩形
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/929c3c99-68d0-41fd-80cd-fbd1c8c2cf49.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b467455ea6b8b7f5e6dd53110bc22060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a3ea5e0d86aeb4f0365be70a2f6638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189641eda0bf47cb2ef949a8d8c64633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e6ef4354cf6337fad1b719ff2bf8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/929c3c99-68d0-41fd-80cd-fbd1c8c2cf49.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-07更新
|
142次组卷
|
2卷引用:浙江省海曙区雅戈尔中学等四校2022-2023学年九年级上学期期中检测数学试题
3 . 观察下列各式:
①
;②
;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bf573858898b714bb790a2487d4a39.png)
(1)请根据以上规律,写出第4个式子: .
(2)请根据以上规律,写出第
个式子: .
(3)根据以上规律计算下列式子的值:
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f46d2748c9411018b3bb2134cbd662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca84e2db65efe3647aba894f55071678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bf573858898b714bb790a2487d4a39.png)
(1)请根据以上规律,写出第4个式子: .
(2)请根据以上规律,写出第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)根据以上规律计算下列式子的值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636f11997eb2deed35d6cc9e38e70061.png)
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4 . 计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c03699116211c291a453f8c3710b86c5.png)
您最近一年使用:0次
名校
5 . 计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c32748bdc5dfa4475c3a3ed4d30679.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468ab7cb75e667793ce7edfcf1166043.png)
(3)
(精确到
,
)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c32748bdc5dfa4475c3a3ed4d30679.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468ab7cb75e667793ce7edfcf1166043.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6060645728dab243974202ac180961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dad09268b7cb8bfcbea010cb6d2a29e.png)
您最近一年使用:0次
6 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bdc0018508046b6e7bd9e292054f56b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b787343900963448836546618ee673.png)
您最近一年使用:0次
名校
7 . 计算
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c53e0f7f21e93cc968f81570e37b0fb.png)
您最近一年使用:0次
名校
8 . 计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0f13b46160950cc2e8526014ee0749.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666a0f7ba67a6ede2b0fbb0b4e59091a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a0805cb3246ab516c6425c431488af.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcaa21b5da49088bc3b7c6b3c98b796f.png)
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9 . 若
,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c69415197d7f001b2f30c5ff0ad60f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d1693b65682b475a3ed2e1521c3375.png)
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名校
10 . (1)计算:
.
(2)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6cf5dcb99c0f7a4bb0ff122460a448.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201c8d21262932137d9c0bbed8be5c59.png)
您最近一年使用:0次