题目内容
| 4 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 3 |
| 4 |
分析:先同时运算乘法和除法,再按照从左到右的顺序计算加法.
解答:解:
×
+5.2×
+1÷
,
=
+
+
,
=2+1
,
=3
.
| 4 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 3 |
| 4 |
=
| 4 |
| 15 |
| 26 |
| 15 |
| 4 |
| 3 |
=2+1
| 1 |
| 3 |
=3
| 1 |
| 3 |
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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