题目内容
5
-(3
-1
).
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| 1 |
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| 3 |
| 4 |
分析:先算小括号里面的减法,再算括号外的减法.
解答:解:5
-(3
-1
),
=5
-1
,
=3
.
| 1 |
| 8 |
| 1 |
| 6 |
| 3 |
| 4 |
=5
| 1 |
| 8 |
| 5 |
| 12 |
=3
| 17 |
| 24 |
点评:一个算式里面有小括号,就先算小括号里面的运算.
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