(1)﹣23﹣6×(﹣3)
(2)(+4.3)﹣|﹣4|+(﹣2.3)﹣(+4)×0.
(2)(+4.3)﹣|﹣4|+(﹣2.3)﹣(+4)×0.
更新时间:2018-12-20 08:38:37
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解答题-计算题
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适中
(0.65)
【推荐1】小杨对算式“(﹣24)×(
﹣
+
)+4÷(
﹣
)”进行计算时的过程如下:根据小杨的计算过程,回答下列问题:(1)小杨在进行第①步时,运用了乘法的 律;(2)他在计算中出现了错误,其中你认为在第 步出错了(只填写序号);(3)请你给出正确的解答过程.
解:原式=(-24)
+(-24)
(-
)+(-24)
+4
(
)
①
=-3+8-6+4
(2-3)
②
=-1-4
③
=-5
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4195d5f8f2bc536030045927ee842fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb84f6fbac102ccf326b2223d69cb7cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10402e4ddd0d323cc1ae83801ae976db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb84f6fbac102ccf326b2223d69cb7cc.png)
解:原式=(-24)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0800658d2d9906f34d81db858baba959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb84f6fbac102ccf326b2223d69cb7cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79626c237a75a0afa80200e4ed01884e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09052719a6d55df23d74d8e3956257ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c16d242ca97a7d0be85162d9414bbb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f3b0731a5bb74ca1865c2d2e613ce.png)
=-3+8-6+4
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f3b0731a5bb74ca1865c2d2e613ce.png)
=-1-4
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f3b0731a5bb74ca1865c2d2e613ce.png)
=-5
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f3b0731a5bb74ca1865c2d2e613ce.png)
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