题目内容
(2007?海淀区)(
+
)÷4+
.
| 1 |
| 9 |
| 1 |
| 27 |
| 23 |
| 27 |
分析:本题的运算顺序是:先算小括号里的,再算除法最后算加减.
解答:解:(
+
)÷4+
=
÷4+
=
+
=
.
| 1 |
| 9 |
| 1 |
| 27 |
| 23 |
| 27 |
=
| 4 |
| 27 |
| 23 |
| 27 |
=
| 1 |
| 27 |
| 23 |
| 27 |
=
| 8 |
| 9 |
点评:本题按运算计算即可,注意结果化成最简分数.
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