计算:
(1)
;
(2)
;
(3)
;
(4)
;
(5)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab5370277cc5759fc39d7d169a1e2c5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c718f6ccb6043c35e0670bcc1867af0a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355b851e2df1cb8a7a1a77fa679cb05c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896ffae3f183d3c69f498fe436d8fed6.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813a3f8f944a1afe1685dd0a85b60e95.png)
23-24七年级上·全国·课后作业 查看更多[2]
更新时间:2023-09-13 21:39:28
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解答题-计算题
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较易
(0.85)
【推荐2】规定符号
表示a,b两个数中较小的一个,规定符号
表示a,b两个数中较大的一个.
例如:
,
.
(1)计算:
;
(2)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
例如:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c55ea80b392b048a27b5f11fd679e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31446331e93a5e0422f34f3e7f8e3f24.png)
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9470b1339e4526a274f2e6741c193369.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e38210ba8aac3a52e40460ad754f789.png)
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