题目内容
(2006?如皋市)
÷[
×(
+
)].
| 1 |
| 8 |
| 1 |
| 25 |
| 2 |
| 5 |
| 1 |
| 10 |
分析:先算小括号内的,再算中括号内的,最后算括号外的.
解答:解:
÷[
×(
+
)],
=
÷[
×
],
=
÷
,
=
×50,
=
.
| 1 |
| 8 |
| 1 |
| 25 |
| 2 |
| 5 |
| 1 |
| 10 |
=
| 1 |
| 8 |
| 1 |
| 25 |
| 1 |
| 2 |
=
| 1 |
| 8 |
| 1 |
| 50 |
=
| 1 |
| 8 |
=
| 25 |
| 4 |
点评:此题重点考查了分数四则混合运算的顺序,在有括号的算式里,先算括号内的,再算括号外的.
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