题目内容
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 5 |
| 8 |
分析:根据四则混合运算的运算顺序可知,本题要先算乘法与除法,再算加法.
解答:解:
×
+
÷
=
+
,
=
.
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 5 |
| 8 |
=
| 1 |
| 10 |
| 4 |
| 5 |
=
| 9 |
| 10 |
点评:四则混合运算的运算顺序为:先算乘除,再算加减,有括号的要先算括号里面的.
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| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 5 |
| 8 |
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 5 |
| 8 |
| 1 |
| 10 |
| 4 |
| 5 |
| 9 |
| 10 |