1 . 问题提出:在同底数幂的运算中,常常会遇到求
个数的和的情况,这
个数的和可以表示为
.那么怎样求
的值呢?
问题探究:为了解决这个问题我们将采取将一般问题特殊化的策略,先从简单和具体的情形入手:
探究一:
①
②
①-②得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e6d0ab11d6afea67e14c76fb4369e4.png)
③
④
③-④得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bdb9cd31f27c8b84d1f6ee2a59aaa7.png)
⑤
⑥
⑤-⑥得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ba425070a5d7457880b612e2a9dd3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86370be98360a5512ed592ab287907be.png)
由以上规律可知
;
.
探究二:
⑦
⑧
⑦-⑧得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0b758b1ec22c3ab9311666b04bb592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e7db70fadb232fed28d15cff00c6f4.png)
⑨
⑩
⑨-⑩![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb532dc9d563bbec560be40ffbc06c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f4dd73f6d84109ab8dc5127e63af86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad51f220124f8a7bd2963180b9b79680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83085532539a9c7adad562553aa1f9ce.png)
请根据前面推导过程推导
,并写出推导过程.
问题解决:请求
,写出求解过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aadce3496cce6f17f1fb33790ee198c.png)
问题探究:为了解决这个问题我们将采取将一般问题特殊化的策略,先从简单和具体的情形入手:
探究一:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77c14b850e7d224fa72660066be3d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402ef4963caf0633813159476fed8d72.png)
①-②得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fedb6698070fa5c15c40833ff9cff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e6d0ab11d6afea67e14c76fb4369e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41964e92e6e2edbf4ea87b422fb791f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7f1a18ae1abc392ff9cb59b8f5729c.png)
③-④得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659cc461c303b8bc2fd437ce1b777d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bdb9cd31f27c8b84d1f6ee2a59aaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c69810fb3f7e72b9360c3fce4a2eff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc59aaed9920f2eefc4b03d395e08b92.png)
⑤-⑥得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ba425070a5d7457880b612e2a9dd3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86370be98360a5512ed592ab287907be.png)
由以上规律可知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f4aed2c6fe46b4f908285f6d4c7b636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d45a52b3e550a3b1bc8e8efdb5797c.png)
探究二:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985b567973b2da754a85cadec6a30d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499b8a2b73daaef498216b5c718f6ba4.png)
⑦-⑧得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0b758b1ec22c3ab9311666b04bb592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e7db70fadb232fed28d15cff00c6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7db2af3b758dedc67f7233a00b9cac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d9a683b2e8a5a926e7feb8dfa95fee.png)
⑨-⑩
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb532dc9d563bbec560be40ffbc06c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f4dd73f6d84109ab8dc5127e63af86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad51f220124f8a7bd2963180b9b79680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83085532539a9c7adad562553aa1f9ce.png)
请根据前面推导过程推导
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3cf40c3b4e46c1c52d7eadff64a9ec4.png)
问题解决:请求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aadce3496cce6f17f1fb33790ee198c.png)
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2 . 观察下列各式:
,
,
,
;…
回答下面的问题:
(1)猜想:
=_________;(直接写出你的结果)
(2)根据(1)中的结论,直接写出13+23+33+......+93+103的值是_________;
(3)计算:213+223+233+......+293+303的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96760fb871318dd02c896bcbc55a610d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d69bec013869e08e35987c29f00030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0e79fdd9395b0def9c29ab4ce585a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2ef811aa66cb221a07683a37405a9e.png)
回答下面的问题:
(1)猜想:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90417551f5fc88c18eaa257a96871627.png)
(2)根据(1)中的结论,直接写出13+23+33+......+93+103的值是_________;
(3)计算:213+223+233+......+293+303的值.
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3 . 已知1×1=1;11×11=121;111×111=12321;1111×1111=1234321,则111111×111111=_____ .
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2020-12-18更新
|
114次组卷
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3卷引用:江苏省泰州市板桥初级中学2020-2021学年七年级上学期第一次月考数学试题
4 .
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2798efda18487d3f52cbb14de64f388.png)
您最近一年使用:0次
5 . 观察下列各式:
,
,
,…
(1)猜想①
.
②
,其中n为正整数.
(2)计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a5e37aa399e44813704a2ec680c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70aff8d0b2088df54ac9fbc865246ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511f64945bf9361daf405c348dca2fb7.png)
(1)猜想①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8179ce4ca93c655b01f47e4dd010028d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adeba664f0ccd4768574599766bc9691.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20df03e379a839537a8e58b83fb65de6.png)
您最近一年使用:0次
2020-12-15更新
|
238次组卷
|
5卷引用:山西省临汾市侯马市2020-2021学年九年级上学期期中数学试题
山西省临汾市侯马市2020-2021学年九年级上学期期中数学试题(已下线)专题8.4 规律问题-备战2021年中考数学精选考点专项突破题集(上海专用)河南省洛阳市汝阳县2022-2023学年九年级上学期期中数学试题(已下线)专题10 实数运算四个类型-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(人教版)安徽省安庆市宜秀区九一六学校2021-2022学年八年级下学期月考 数学试卷
6 . 观察下列图形:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/195a7248-8858-47d8-a64d-9e99232bfd3e.png?resizew=451)
请用你发现的规律直接求出图④数y图⑤中的x,则x+y=_________
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/195a7248-8858-47d8-a64d-9e99232bfd3e.png?resizew=451)
请用你发现的规律直接求出图④数y图⑤中的x,则x+y=
您最近一年使用:0次
2020-12-13更新
|
144次组卷
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3卷引用:黑龙江省大庆市萨尔图区2019-2020学年九年级上学期期末数学试题(五四学制)
黑龙江省大庆市萨尔图区2019-2020学年九年级上学期期末数学试题(五四学制)(已下线)专题8.4 规律问题-备战2021年中考数学精选考点专项突破题集(上海专用)黑龙江省大庆市2020-2021学年九年级上学期期末数学试题
名校
7 . 解答下列各题:
(1)
(n为正整数)的整数部分是什么?
(2)若
的整数部分为a,小数部分为b,求
的值.
(3)已知
表示
的整数部分(x>0),试求M=f(1002)+ f(1003)+ f(1004)+...+ f(2005)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a341e5eb6197b8e97154d0aa33330571.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51115f3e6deff4707c7adfcc010a94d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abf80acdd3b8edcacb6ea6b0a15e256.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d83cf1b93420c07725ee688529cbd46.png)
您最近一年使用:0次
8 . 观察下面一列数:-1,2,-3,4,-5,6,-7……,将这列数排成下图形式.按照此规律排下去,那么第_________ 行从坐标数第_________ 个数是-2019.
![](https://img.xkw.com/dksih/QBM/2020/11/17/2595077737447424/2595580183060480/STEM/a85aa73b4ee44313a480d7eadc156f05.png?resizew=160)
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2020-12-12更新
|
149次组卷
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2卷引用:湖北省武汉外国语学校美加分校 2019—2020学年七年级上学期九月月考数学试题
名校
9 . 阅读材料,解决问题:由
,
,
,
,
,
,
,
,......不难发现3的正整数幂的个位数字以3、9、7、1为一个周期循环出现,由此可以得到:因为
,所以
个位数字与
的个位数字相同,应为1;因为
,所以
的个位数字与
的个位数字相同,应为3.
(1)请你仿照材料,分析求出
的个位数字及
的个位数字;
(2)请探索出
的个位数字;
(3)请直接写出
的个位数字.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0af894d7088d2771c33e3a0c30eacae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738317df2665c72d92812b7714675549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a52685b77856d28af3beed027d725506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821e700b06aa24b12e0d4e4bd9b31aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914832f3edf43812c7ffa2c7fea02620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d58a9daa5736ec597957257887a5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349323bd88899ac593ac5559e56a8676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddc1a15a785712fd4b9ef569e9f7d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c449d00b91a6149d4450c10a62399b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f1e5fc3a510a5376fb46bbf43a747c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31f4bb041929b56b13ca6df65496228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3f9614bb5a0e8adedf211d2abb955c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b751862b416413c98f0d040d7b050f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3afa44962d486b748dc9bf8e9c85e397.png)
(1)请你仿照材料,分析求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369c86b3aa49b95388c189c5d91fdd8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8341de43b7bf796a58c79a2abdfd2383.png)
(2)请探索出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9669b8fdb6818cefdad06bac5fc6f78.png)
(3)请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5e25c20486219de46a8bd8e2913291.png)
您最近一年使用:0次
2020-12-09更新
|
1176次组卷
|
5卷引用:重庆市开州区2018-2019学年七年级上学期期末数学试题
重庆市开州区2018-2019学年七年级上学期期末数学试题重庆市重庆市大坪中学校2002-2021学年七年级上学期12月月考数学试题(已下线)第09讲 有理数的乘方-【暑假自学课】2022年新七年级数学暑假精品课(人教版)(已下线)1.5.1 有理数的乘方(培优分阶练)-2022-2023学年七年级数学上册课后培优分级练(人教版)(已下线)专题04 有理数及其运算 重难点题型16个-2022-2023学年七年级数学上册重难题型全归纳及技巧提升专项精练(北师大版)
10 . 观察下面的计算:
,
;
,
;
,
;
,
﹔
根据上面的计算,你能作出什么猜测?你将用什么方法来判断你的猜想是正确的?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37fdee6826493cbff391a4541436c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e11af15be32213c929c5b29b513db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d025b5cb7676462e01f91f50fa25390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d610dbf119ac2b60048b587c94b3c837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334a6868cd525e1c8c5eb825b1652995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738fb7e322425e3af2a2be8799ab917e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f09d56a8662dd32122fefd755eec49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1ee9269ffc843cd686b78ad9969a7f.png)
根据上面的计算,你能作出什么猜测?你将用什么方法来判断你的猜想是正确的?
您最近一年使用:0次