题目内容
| 3 |
| 8 |
| 1 |
| 2 |
| 2 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
1
1
.分析:先算小括号里面的加,再算中括号里面的除,再算中括号里面的减,最后算括号外面的乘,由此顺序计算即可.
解答:解:
×[(1
+2
)÷
-2
],
=
×[
×
-2
],
=
×[5-2
],
=
×
,
=1.
故答案为:1.
| 3 |
| 8 |
| 1 |
| 2 |
| 2 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
=
| 3 |
| 8 |
| 25 |
| 6 |
| 6 |
| 5 |
| 1 |
| 3 |
=
| 3 |
| 8 |
| 1 |
| 3 |
=
| 3 |
| 8 |
| 8 |
| 3 |
=1.
故答案为:1.
点评:在计算乘法遇到带分数,要先把带分数化为假分数,再去计算.
练习册系列答案
相关题目