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简便计算15.8X12+14.2X12
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您好!亲,这道题我们可以用乘法分配律进行简便运算,15.8×12+14.2×12=12×(15.8+14.2)=12×30=360
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咨询记录 · 回答于2022-11-03
简便计算15.8X12+14.2X12
快点
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_14.png)
您好!亲,这道题我们可以用乘法分配律进行简便运算,15.8×12+14.2×12=12×(15.8+14.2)=12×30=360
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_01.png)
您急什么呢?亲
![](https://s.bdstatic.com/common/openjs/emoticon/img/face_01.png)