题目内容
| 11 |
| 15 |
| 4 |
| 15 |
| 4 |
| 9 |
| 2 |
| 3 |
| 5 |
| 6 |
分析:按分数的四则运算的顺序计算,先算乘除后算加减,有括号的先算括号里面的.
解答:解:
+
÷(1
-
×
),
=
+
÷(
-
),
=
+
÷
,
=
+
,
=1
.
| 11 |
| 15 |
| 4 |
| 15 |
| 4 |
| 9 |
| 2 |
| 3 |
| 5 |
| 6 |
=
| 11 |
| 15 |
| 4 |
| 15 |
| 13 |
| 9 |
| 5 |
| 9 |
=
| 11 |
| 15 |
| 4 |
| 15 |
| 8 |
| 9 |
=
| 11 |
| 15 |
| 3 |
| 10 |
=1
| 1 |
| 30 |
点评:此题考查了按分数的四则运算的顺序计算.
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