计算:
(1)3
+(
)+(
)+(
);
(2)25.7+(-7.3)+(-13.7)+7.3;
(3)(-2.125)+(
)+(
)+(-3.2);
(4)(-0.8)+6.4+(-9.2)+3.6+(-1).
(1)3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6486784415f3537c9a13556c05d893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b9e7cca0bf3f1bf8798442296b4d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35153927ea985402e2d7f9145d92b3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61e52d703b4fe720339d53749d2e0b5.png)
(2)25.7+(-7.3)+(-13.7)+7.3;
(3)(-2.125)+(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85eb75ea6160a7fae67930f98baafe2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c019a979ac00d6694000514c2b6797.png)
(4)(-0.8)+6.4+(-9.2)+3.6+(-1).
更新时间:2019-06-13 16:34:26
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【知识点】 有理数的加减混合运算解读
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