题目内容
| 1 |
| 9 |
| 5 |
| 12 |
| 4 |
| 5 |
分析:先算乘法,再算除法,最后算减法.
解答:解:
-
×
÷3,
=
-
÷3,
=
-
,
=0.
| 1 |
| 9 |
| 5 |
| 12 |
| 4 |
| 5 |
=
| 1 |
| 9 |
| 1 |
| 3 |
=
| 1 |
| 9 |
| 1 |
| 9 |
=0.
点评:一个算式里:1、如果是同一级运算,一般按从左往右依次进行计算;2、如果既有加减、又有乘除法,先算乘除法、再算加减.
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| 1 |
| 9 |
| 5 |
| 12 |
| 4 |
| 5 |
| 1 |
| 9 |
| 5 |
| 12 |
| 4 |
| 5 |
| 1 |
| 9 |
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 9 |