题目内容
________+
=
1-________=
(________)+(________)=1.
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/479.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
分析:①可根据和-一个加数=另一个加数进行计算即可得到答案;
②根据被减数-差=减数进行计算即可;
③要使最后的和等于1,那么两个加数可以为
![](http://thumb.1010pic.com/pic5/latex/13.png)
解答:①
![](http://thumb.1010pic.com/pic5/latex/597.png)
![](http://thumb.1010pic.com/pic5/latex/112.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
②1-
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
③(1-
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/96.png)
=
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
=1;
故答案为:①
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/365.png)
![](http://thumb.1010pic.com/pic5/latex/1603.png)
点评:此题主要考查的是分数的加减法运算.
![](http://thumb2018.1010pic.com/images/loading.gif)
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例:
3÷3+3-3=1 33÷33=1(1)
① 3 3 3 3=1 |
② 3 3 3 3=2 |
③ 3 3 3 3=3 |
④ 3 3 3 3=4 |
⑤ 3 3 3 3=5 |
⑥ 3 3 3 3=6 |
⑦ 3 3 3 3=7 |
⑧ 3 3 3 3=8 |
⑨ 3 3 3 3=9 |
⑩ 3 3 3 3=10 |
(2)
![](http://thumb.1010pic.com/pic7/pages/0000/0737/1366/1d2ac949515939639d96866a3b604a3d/A/A.htm3.gif)
① 3 3 3 3=1 |
② 3 3 3 3=2 |
③ 3 3 3 3=3 |
④ 3 3 3 3=4 |
⑤ 3 3 3 3=5 |
⑥ 3 3 3 3=6 |
⑦ 3 3 3 3=7 |
⑧ 3 3 3 3=8 |
⑨ 3 3 3 3=9 |
⑩ 3 3 3 3=10 |
① 3 3 3 3=1 |
② 3 3 3 3=2 |
③ 3 3 3 3=3 |
④ 3 3 3 3=4 |
⑤ 3 3 3 3=5 |
⑥ 3 3 3 3=6 |
⑦ 3 3 3 3=7 |
⑧ 3 3 3 3=8 |
⑨ 3 3 3 3=9 |
⑩ 3 3 3 3=10 |