数学使我们的生活变得更加的绚丽多彩,下面我们一起走进奇妙的数学世界.同学们请用“2,
,3,4”这四个数(每一个数用且只能用一次)用仅含有加、减、乘、除及括号进行运算,使其结果等于24.试写出你的算式(只写一个即可)________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
更新时间:2022-11-10 20:23:49
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【知识点】 算“24”点
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【推荐1】小时候我们玩过一种“二十四点”的游戏,其游戏规则是这样的:任取四个
至
之间的自然数,将这四个数
每个数用且只能用一次
进行加减乘除四则运算,使其结果等于
例如对
,
,
,
,可作如下运算:
上述运算与
视为相同方法的运算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e908e7b7fa07b74614971966234187b.png)
解决问题:我们的数学书
页
组第
题“将有理数
,
,
,
进行加减乘除四则运算
每个数必须用且只能用一次
,使其结果等于
”请写出三种不同方法的运算式,可以使用括号,运算式如下:①______ ,②______ ,③______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e908e7b7fa07b74614971966234187b.png)
解决问题:我们的数学书
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb69696a695cdb5e352d5dbbb7182b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
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【推荐2】小亮和同伴玩“24点”游戏,游戏规则是从一组卡片中任意抽取4张,根据卡片上的数进行混合运算(每张卡片必须用一次且只能用一次,可以加括号),使得运算结果为24或
.小亮抽到的4张卡片上的数分别是2,
,12,13,请帮助小亮列出一个结果为24或
的算式________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd701839451bde3c9dff71cf92fa40d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd701839451bde3c9dff71cf92fa40d1.png)
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