用竖式计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766d7c3f531ef29d82ce405f115835ff.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b9108c6a5eb8791e1ed271542356a0.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4139eb421504ae29f3c78c6aecd93c9.png)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766d7c3f531ef29d82ce405f115835ff.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b9108c6a5eb8791e1ed271542356a0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4139eb421504ae29f3c78c6aecd93c9.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6176ab1b0c6ff2122653ec65bc4c2b6.png)
更新时间:2023-10-25 14:53:07
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解答题-问答题
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【推荐1】如图所示,在一条不完整的数轴上从左到右有点A、B、C,其中点A到点B的距离为4,点B到点C的距离为8,设点A、B、C所对应的数的和是m,点A、B、C所对应的数的绝对值的和是n.
(1)若以A为原点,则数轴上点B所表示的数是 ;
(2)若以B为原点,则m= ,n= ;
(3)若原点O在图中数轴上,且点B到原点O的距离为3,求m的值.
(1)若以A为原点,则数轴上点B所表示的数是 ;
(2)若以B为原点,则m= ,n= ;
(3)若原点O在图中数轴上,且点B到原点O的距离为3,求m的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5e1b9ada-109d-44d8-ba37-c384f9039d55.png?resizew=365)
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【推荐2】已知
.
(1)
______,
______.
(2)若
,求
的值.
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26cc43e25e3b89ce1c14cafd4ea7911.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a282a26425364ccba7566e7c48f2f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5abe56c019ac914e1fcde1865a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
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解答题-计算题
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【推荐1】计算.(直接写出运算结果)
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd06122cfe2e50ba10cf34b71c812932.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626fe3b1ff82b5eeb523b89c5eb51423.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b363bec6b267f65a9600b86b8f4a69.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72cdfd54db353fe91b286f0621e6cfa.png)
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解答题-计算题
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适中
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【推荐1】计算:(1)12-(-18)+(-7)-15 (2)(1
﹣
﹣
)×(﹣1
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357821e0e5595eaf3028df63d47b2c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc0f4e88a98b2b25320e4bed691342b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
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解答题-问答题
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【推荐1】我们知道:在研究和解决数学问题时,当问题所给对象不能进行统一研究时,我们就需要根据数学对象的本质属性的相同点和不同点,将对象区分为不同种类,然后逐类进行研究和解决,最后综合各类结果得到整个问题的解决,这一思想方法,我们称之为“分类讨论的思想”这一数学思想用处非常广泛,我们经常用这种方法解决问题.例如:我们在讨论|a|的值时,就会对a进行分类讨论,当a≥0时,|a|=a;当a<0时,|a|=﹣a.现在请你利用这一思想解决下列问题:
(1)
;
;
(2)
(a≠0),
(其中a>0,b≠0);
(3)若abc≠0,试求
的所有可能的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc799406457f04f77fafc34dabda9fe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a1a06aa757fef854cd5cf058903593e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5c4136e4f1b706fe2b9ffa132209ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc64a12bc1b0264ebb66c9a94f0e9742.png)
(3)若abc≠0,试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1708e0077d89f07041ecb7b89b9fa5bd.png)
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【推荐2】(1)若
,
;若
,
;
(2)若
,则
= ;
(3)若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b3cacc24c7cd34a4a7c20292ad5382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489bae372031e5dc8d8b32acbe3ef063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be129d154a07c41156314073ebaab35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d303ca00f2cc24a0677f78fb63a2ef.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0219208c068423dd31f170b6fc5edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2e93bc4901f8b17164b0c2a8de7508.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ecb7ac94a48bb107cb7af1ec6b0b575.png)
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