题目内容
计算:[(11
-3
×1
)-8
÷3.6]÷2
.
| 1 |
| 9 |
| 2 |
| 5 |
| 2 |
| 17 |
| 2 |
| 5 |
| 6 |
| 25 |
分析:本题按照先算小括号里的再算中括号里的最后算括号外的顺序运算.
解答:解:[(11
-3
×1
)-8
÷3.6]÷2
=[(
-
×
)-
×
]×
=[(
-
)-
]×
=(
-
)×
=
×
=
.
| 1 |
| 9 |
| 2 |
| 5 |
| 2 |
| 17 |
| 2 |
| 5 |
| 6 |
| 25 |
=[(
| 100 |
| 9 |
| 17 |
| 5 |
| 19 |
| 17 |
| 42 |
| 5 |
| 5 |
| 18 |
| 25 |
| 56 |
=[(
| 100 |
| 9 |
| 19 |
| 5 |
| 21 |
| 9 |
| 25 |
| 56 |
=(
| 79 |
| 9 |
| 19 |
| 5 |
| 25 |
| 56 |
=
| 224 |
| 45 |
| 25 |
| 56 |
=
| 20 |
| 9 |
点评:本题根据运算顺序直接运算,注意先算什么,再算什么.
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