题目内容
计算:(2
×(
-
)÷(
+
))÷
= .
| 2 |
| 3 |
| 1 |
| 3 |
| 1 |
| 11 |
| 1 |
| 11 |
| 1 |
| 5 |
| 8 |
| 27 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:根据分数四则混合运算的顺序,先分别计算两个小括号内的,再算中括号内的,最后再算括号外的.
解答:
解:[2
×(
-
)÷(
+
)]÷
=[
×
÷
]÷
=[
×
×
]×
=
×
=7
.
故答案为:7
.
| 2 |
| 3 |
| 1 |
| 3 |
| 1 |
| 11 |
| 1 |
| 11 |
| 1 |
| 5 |
| 8 |
| 27 |
=[
| 8 |
| 3 |
| 8 |
| 33 |
| 16 |
| 55 |
| 8 |
| 27 |
=[
| 8 |
| 3 |
| 8 |
| 33 |
| 55 |
| 16 |
| 27 |
| 8 |
=
| 20 |
| 9 |
| 27 |
| 8 |
=7
| 1 |
| 2 |
故答案为:7
| 1 |
| 2 |
点评:此题是考查分数的四则计算,关键是记住运算顺序.
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