数轴上从左到右排列有2022个整数点,它们表示的整数分别记为
,且
为连续整数.
(1)若
=-1,则
= ;
(2)若
=10,①则
= ,
= ;②求a1-a2+a3-a4+…+a2021-a2022的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f58e7eccff44f16a37137cc4c0cef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f58e7eccff44f16a37137cc4c0cef8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea00d10c496ccacb5b25c9574d6cdb09.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea00d10c496ccacb5b25c9574d6cdb09.png)
更新时间:2021-10-27 17:28:34
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相似题推荐
解答题-计算题
|
适中
(0.65)
【推荐1】计算:
(1)﹣1+
;
(2)12×(﹣0.25)﹣1;
(3)﹣x2y+2﹣3x2y﹣6;
(4)﹣4(﹣2a+b).
(1)﹣1+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
(2)12×(﹣0.25)﹣1;
(3)﹣x2y+2﹣3x2y﹣6;
(4)﹣4(﹣2a+b).
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】计算:(-
)2÷(-1)5×(-3)2-(1
+2
-3
)×(-24).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ee3c61d2298e75fc4f1643f8ebc2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】试比较
与
的大小.为了解决这个问题,写出它的一般形式,即比较
和
的大小(
为正整数),从分析
这些简单问题入手,从中发现规律,经过归纳,猜想出结论:
(1)在横线上填写“>”、“<”、“=”号.
____
,
______
,
______
,
______
,
_____![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26be7c3f0c0462341f9b26e44cc06f3a.png)
(2)从上面的结果经过归纳.可以猜想出
和
的大小关系是:
当
_____时,
______
;
当
_____时,
_____
;
(3)根据上面猜想得出的结论试比较下列两个数的大小,
与
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276e9308937a8d08b6c1b3af1836c311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2e84442b430f168979c5bef62d0d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df36dca14a9c5825ac1068ba40ece26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b30e385817e1dd54569bd2a49e9c38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478672e0fdcff9f6e8a8350da8fbc2ba.png)
(1)在横线上填写“>”、“<”、“=”号.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59a2436c32f2de1b93c7f1f8b7371f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78697a69758b8d469a74236859514a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6648bc986a558fa32e752d28d3a68431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3f00a02e931a265f86950296602f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31f4bb041929b56b13ca6df65496228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b630bc20f1ca5fd0621ca3d4b1dbf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61e8f668182ec53d065909dcf4b2140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b20c44627dd83e482c0029c5fc282991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0f712d54db8c891f0f1de008e049a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26be7c3f0c0462341f9b26e44cc06f3a.png)
(2)从上面的结果经过归纳.可以猜想出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9414e4fcde0d04825243b89fd9435e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b30e385817e1dd54569bd2a49e9c38f.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37574848fbb2eb517e50ff6a6a8e46f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9414e4fcde0d04825243b89fd9435e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b30e385817e1dd54569bd2a49e9c38f.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9955dd34e0768edee810e182ba2629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9414e4fcde0d04825243b89fd9435e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b30e385817e1dd54569bd2a49e9c38f.png)
(3)根据上面猜想得出的结论试比较下列两个数的大小,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276e9308937a8d08b6c1b3af1836c311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2e84442b430f168979c5bef62d0d60.png)
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解答题-计算题
|
适中
(0.65)
【推荐2】问题情境
图1是2023年3月份的日历,选择图中所示的方框部分,将这4个数字按照:“右上角数字
左下角数字
左上角数字
右下角数字”进行计算.
______;
______;
归纳猜想
(1)若在方框部分,设左上角数字为m,则右下角数字为______(用含m的代数式表示);
(2)在问题情景和(1)的基础上,请猜想方框里的4个数字计算结果的规律,并对猜想加以证明;
变式应用
如图2,选择任意的16个数字方框,将四个角上的数字,仍按照问题情景中的运算方法计算,(2)中的规律还成立吗?并说明理由.
图1是2023年3月份的日历,选择图中所示的方框部分,将这4个数字按照:“右上角数字
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68727b9f88f7a492cccd197188710de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5399001efb1b4c854cd3d2e7304424.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/12/d21e67f4-6c71-4c9b-8dad-25e7fbb1d2d1.png?resizew=463)
归纳猜想
(1)若在方框部分,设左上角数字为m,则右下角数字为______(用含m的代数式表示);
(2)在问题情景和(1)的基础上,请猜想方框里的4个数字计算结果的规律,并对猜想加以证明;
变式应用
如图2,选择任意的16个数字方框,将四个角上的数字,仍按照问题情景中的运算方法计算,(2)中的规律还成立吗?并说明理由.
您最近一年使用:0次