题目内容
| 7 |
| 18 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 9 |
分析:同时计算除法和乘法,最后算加法.
解答:解:
÷
+
×
,
=
+
,
=
.
| 7 |
| 18 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 9 |
=
| 7 |
| 9 |
| 2 |
| 27 |
=
| 23 |
| 27 |
点评:一个算式里,如果含有两级运算,要先做第二级运算,后做第一级运算.
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题目内容
| 7 |
| 18 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 9 |
| 7 |
| 18 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 9 |
| 7 |
| 9 |
| 2 |
| 27 |
| 23 |
| 27 |