计算:
(1)
;
(2)
;
(3)
;
(4)
;
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ae37c021179d37761a819ba1542296.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e76a2db3eaa8f2f47b7e7bcab6e890b.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3809bde32c05b9fb382c472103279474.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb0dd662c2b19edf2312d87e4510713.png)
更新时间:2023-10-21 11:26:40
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相似题推荐
解答题-计算题
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适中
(0.65)
【推荐1】探究规律,完成相关题目:
小明说:“我定义了一种新的运算,叫※(加乘)运算.”
然后他写出了一些按照※(加乘)运算的运算法则进行运算的算式:
;
;
;
;
;
;
;
.
小亮看了这些算式后说:“我知道你定义的※(加乘)运算的运算法则了.”
聪明的你也明白了吗?
(1)观察以上式子,类比计算:①
______,②
______;
(2)计算:
(括号的作用与它在有理数运算中的作用一致,写出必要的运算步骤)
(3)我们知道加法有交换律和结合律,这两种运算律在有理数的※(加乘)运算中还适用吗?请你任选一个运算律,判断它在※(加乘)运算中是否适用,并举例验证.(举一个例子即可)
小明说:“我定义了一种新的运算,叫※(加乘)运算.”
然后他写出了一些按照※(加乘)运算的运算法则进行运算的算式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfa9436198d7ed08e03b2f9d702b34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ac0ac0798c0990b6fd753c147c5683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17c0e02658c0f6ff376de96f5705187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88cfdfe2b2b1df8fe3520a79b2539abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8aa0317c3c519538c175558a1ba1e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7ee8791266ed56334fec46e25d7aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82941572ba2fb73d3513ba1a47ec73b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2383ccb173493b145cc21fd240e2a3.png)
小亮看了这些算式后说:“我知道你定义的※(加乘)运算的运算法则了.”
聪明的你也明白了吗?
(1)观察以上式子,类比计算:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c807a1d0d11793642a86ba51131e3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da0fd191f9cdb19398baa2f04cef5e6.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1770c06091688a6042eb3c02498915e7.png)
(3)我们知道加法有交换律和结合律,这两种运算律在有理数的※(加乘)运算中还适用吗?请你任选一个运算律,判断它在※(加乘)运算中是否适用,并举例验证.(举一个例子即可)
您最近一年使用:0次
解答题-计算题
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适中
(0.65)
【推荐2】计算:
(1)
; (2)
; (3)
; (4)
;
(5)
; (6)
; (7)
; (8)
;
(9)
; (10)
;
(11)
; (12)
;
(13)
; (14)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deddbd0e8065bec382f0ec30ca3e54ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2286f15ab2fb7af87c5bb35a9ce9bda7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0f92fdbaa40da3d301b389361072ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d000e676468231b9da4885f63218c96.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35fb30aeabc7b7fab076f6ab5c36db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b49376c922987fa2085f4ebc8ba6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dcb878f23b72a826c5eba30eb7fee53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ccd85a42f76d3e7ecbc32916812b22.png)
(9)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251cdd096048794d3623e542879b7333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beab568444597087ad5798f9f3b10151.png)
(11)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da202db79ea30760a0002998aa226287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab474e9974b82a7c7ce8e9a549a17fca.png)
(13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b32dd2abba32ebf84081906b6d4fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf18937b15145c27e3a3bce4afba0bd9.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】阅读下面的解题过程并填空.
计算:
.
解:原式
(第一步)
(第二步)
(第三步)
.
(1)在计算过程中,第一步把原式化成________的形式;第二步是根据________得到的,目的是简便计算;
(2)请根据以上的解题技巧计算:
.
计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96355d62018f76b5403ac4149d1da89e.png)
解:原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec8f96c089636711ee2826e1c86ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6a4e77e2adedae109b98dd9a579c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d114b5d586232c451cff51ac4c8884b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e4c403759024e71362fdc528d89d8b.png)
(1)在计算过程中,第一步把原式化成________的形式;第二步是根据________得到的,目的是简便计算;
(2)请根据以上的解题技巧计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0812df4fef85fbcaac487b20ebe7d95.png)
您最近一年使用:0次
解答题-计算题
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适中
(0.65)
【推荐1】阅读下列解题过程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e62a0cf4edaeae84be71c822256e9b.png)
解:原式
(第一步)
(第二步)
(第三步)
解答问题:
(1)上面解答过程有两个错误,第一处是第_______步,错误的原因是______;第二处是第_______步,错误的原因是_______.
(2)请你正确解答本题.并请你根据平时的学习经验,就有理数的计算过程还需要注意的事项给同学们提出一条建议.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e62a0cf4edaeae84be71c822256e9b.png)
解:原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7651dc5e1fe0c1122a3ecdd29eb36893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4983d6bd9d2dd32806c45f1961f357a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23bcc807c9607c9bbb4f9a7fe535e310.png)
解答问题:
(1)上面解答过程有两个错误,第一处是第_______步,错误的原因是______;第二处是第_______步,错误的原因是_______.
(2)请你正确解答本题.并请你根据平时的学习经验,就有理数的计算过程还需要注意的事项给同学们提出一条建议.
您最近一年使用:0次
解答题-计算题
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适中
(0.65)
【推荐1】计算题:
(1)
;
(2)
;
(3)
(简便运算);
(4)
(简便运算);
(5)
;
(6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d67276778c366d31355b1c9a32d1895.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005c00203d9a6e9dd0790252b0f79b64.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3a36f50c7a6edab6d4698fc43e63a8.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57eaef9be71cd7a4a3778107956246f3.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22394e54b20d38fbd919ccf0dc2ff027.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997d45d6933606a0807e8960c64a4449.png)
您最近一年使用:0次
解答题-计算题
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适中
(0.65)
名校
【推荐2】(1)计算:
.
(2)化简并求值:
,其中x、y取值的位置如图所示.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ddcbf9b144f8ba343907513af7394b.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9c7bff7cc4388afc44a7f9ffd89cd6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/a58a8c9c-303e-46a4-ba8d-741cde1ee4a7.png?resizew=243)
您最近一年使用:0次