题目内容
(2007?海淀区)
×[
+(
-
)].
| 2 |
| 3 |
| 9 |
| 10 |
| 7 |
| 16 |
| 1 |
| 4 |
分析:先算小括号里的减法,再算中括号里的加法,最后算中括号外的乘法.
解答:解:
×【
+(
-
)】,
=
×【
+
】,
=
×
,
=
.
故答案为:
.
| 2 |
| 3 |
| 9 |
| 10 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 2 |
| 3 |
| 9 |
| 10 |
| 3 |
| 16 |
=
| 2 |
| 3 |
| 87 |
| 80 |
=
| 29 |
| 40 |
故答案为:
| 29 |
| 40 |
点评:此题考查在混合运算中有括号时,要先算小括号,再算中括号,最后算中括号外面的.
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