题目内容
| 11 |
| 12 |
| 1 |
| 6 |
| 3 |
| 8 |
| 1 |
| 4 |
分析:先算小括号里面的加法,再算中括号里面的减法,然后算括号外的除法,最后算乘法.
解答:解:
÷[1-(
+
)]×
,
=
÷[1-
]×
,
=
÷
×
,
=2×
,
=
.
| 11 |
| 12 |
| 1 |
| 6 |
| 3 |
| 8 |
| 1 |
| 4 |
=
| 11 |
| 12 |
| 13 |
| 24 |
| 1 |
| 4 |
=
| 11 |
| 12 |
| 11 |
| 24 |
| 1 |
| 4 |
=2×
| 1 |
| 4 |
=
| 1 |
| 2 |
点评:一个算式里,如果有括号,要先算小括号里的,再算中括号里面的.
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