计算:
(1)
;
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a75f4a136bbf00edc876d68cd06cdc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f116c1e08b21f1f2f91635868c16afad.png)
更新时间:2023-11-18 21:39:48
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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】小明对有理数
,
定义了一种新的运算,叫做“反加法”,记作“
”.他写出了一些按照“反加法”运算的算式:
,
,
,
,
,
,
,
,
,
.
小亮看了这些算式后说:“我明白你定义的‘反加法’法则了.”他将法则整理出来给小明看,小明说:“你的理解完全正确.”
(1)请将下面小亮整理的“反加法”法则补充完整:
①绝对值不相等的两数相“反加”,同号得______,异号得______,并______;
②绝对值相等的两数相“反加”,都得______;
③任何数与0相“反加”,都得这个数的______.
(2)若括号的作用与它在有理数运算中的作用相同,用“反加法”计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc09674f5b48f28caa96310fc0703c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50427def1b6748f8812bef47d4993de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d04509949a9d9b7bf996f31667578fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7450554753db78dff5551f07e3d776f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6624a60c12244d3494108806a777297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be27ed8982c3fa9494335899c9a8250c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c8652b71f1b3e15fd8cf562f27a251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faa2ae4a1abec8fe6d9982e5034677a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0df9dfccd2a9972ba8ed81143e6f956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4203dcdc24ff917d80c895e0eb700a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949488e7e88fbecb640f97f6ad4af310.png)
小亮看了这些算式后说:“我明白你定义的‘反加法’法则了.”他将法则整理出来给小明看,小明说:“你的理解完全正确.”
(1)请将下面小亮整理的“反加法”法则补充完整:
①绝对值不相等的两数相“反加”,同号得______,异号得______,并______;
②绝对值相等的两数相“反加”,都得______;
③任何数与0相“反加”,都得这个数的______.
(2)若括号的作用与它在有理数运算中的作用相同,用“反加法”计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be12c7eaf78b37f2292c935a88fc45b.png)
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解答题-计算题
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适中
(0.65)
名校
【推荐2】计算:
(1)(﹣53)+(+21)﹣(﹣69)﹣(+37) (2)
.
(1)(﹣53)+(+21)﹣(﹣69)﹣(+37) (2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f584307dc55be34e383488e164e38c.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】小明是一个聪明而又富有想象力的孩子.学习了“有理数的乘方”后,他就琢磨着使用“乘方”这一数学知识,脑洞大开地定义出“有理数的除方”概念.于是规定:若干个相同有理数
均不能为
的除法运算叫做除方,如
,
等,类比有理数的乘方.小明把
记作
,
记作
.
(1)直接写出计算结果:
______,
______;
(2)关于“有理数的除方”下列说法正确的是______
填序号![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①
;
②
;
③对于任意正整数
,都有
;
④对于任意正整数
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16e51a7fb69d1e548834bcfd6c50582.png)
(3)小明深入思考后发现:“除方”运算能够转化成乘方运算,且结果可以写成幂的形式:
为正整数,
,
.
请利用推导公式计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fb378d6bf91902efa15881985c5e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbfa18465de74e7a3a414704f38ba39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbada1b68a9ef62fa4375799eb9bfb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbfa18465de74e7a3a414704f38ba39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd493421a431d9df7fd1875b77792b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbada1b68a9ef62fa4375799eb9bfb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72079f9b1a33931b23ba2d2c8aca693d.png)
(1)直接写出计算结果:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f638eb5167a74f0b42a73e8510c11d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8acb7f84c85da79ce6430ef6430a4f7.png)
(2)关于“有理数的除方”下列说法正确的是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301324443eb93b467134a86890dd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb5cdd250e1a19160144b737dde3816.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f97bab665452ffb15e114d59916982.png)
③对于任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d350dcb4aa558477f7661abb81cd5b60.png)
④对于任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16e51a7fb69d1e548834bcfd6c50582.png)
(3)小明深入思考后发现:“除方”运算能够转化成乘方运算,且结果可以写成幂的形式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1002053860a43fa4796f85cfbcd619af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2be31d987108fba76dbca933b92d8c.png)
请利用推导公式计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b5cfa56af06f60dafe6622ddbdd8dc.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】请你认真阅读下列材料:
计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4608bf09798ded65a24ebc3ec2ee45d0.png)
解法一:因为原式的倒数=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b76f0214aa80b364bc5df30dd9355d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265356acd759171955b5b086042916fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91465d56276d2823742b029ba28e3946.png)
.
所以原式
,
解法二:原式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160d71afce008fa4b01619ebd56d48d7.png)
.
(1)上述得出的结果不同,肯定有错误解法,你认为哪种解法是错误的?为什么?
(2)根据你对所提供材料的理解,计算下面的题目:
.
计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4608bf09798ded65a24ebc3ec2ee45d0.png)
解法一:因为原式的倒数=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b76f0214aa80b364bc5df30dd9355d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265356acd759171955b5b086042916fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91465d56276d2823742b029ba28e3946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1badda2fb2fa5096a97c7c9ed60fbe82.png)
所以原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f745595234e43158d218bc09d3763374.png)
解法二:原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160d71afce008fa4b01619ebd56d48d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7ea04264aa0b6b25b0fb1225cf3504.png)
(1)上述得出的结果不同,肯定有错误解法,你认为哪种解法是错误的?为什么?
(2)根据你对所提供材料的理解,计算下面的题目:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdb574854bd26429a043e3bc495ebed.png)
您最近一年使用:0次