题目内容
计算:
=________.
5.3
分析:根据乘法分配律:a(b+c)=ab+ac,进行简便运算即可.
解答:
×(
+0.75),
=
×
+
×
,
=5+0.3,
=5.3,
故答案为:5.3.
点评:解答此题的关键是根据乘法分配律进行简便运算.
分析:根据乘法分配律:a(b+c)=ab+ac,进行简便运算即可.
解答:
![](http://thumb.1010pic.com/pic5/latex/335.png)
![](http://thumb.1010pic.com/pic5/latex/4620.png)
=
![](http://thumb.1010pic.com/pic5/latex/335.png)
![](http://thumb.1010pic.com/pic5/latex/4620.png)
![](http://thumb.1010pic.com/pic5/latex/335.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
=5+0.3,
=5.3,
故答案为:5.3.
点评:解答此题的关键是根据乘法分配律进行简便运算.
![](http://thumb2018.1010pic.com/images/loading.gif)
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