题目内容
3-(
÷6
+2
)
| 4 |
| 5 |
| 2 |
| 3 |
| 2 |
| 5 |
分析:先算小括号里的
÷6
得
,再算
+2
,最后算括号外面的减.
| 4 |
| 5 |
| 2 |
| 3 |
| 3 |
| 25 |
| 3 |
| 25 |
| 2 |
| 5 |
解答:解:3-(
÷6
+2
),
=3-(
+2
),
=3-2
,
=
.
| 4 |
| 5 |
| 2 |
| 3 |
| 2 |
| 5 |
=3-(
| 3 |
| 25 |
| 2 |
| 5 |
=3-2
| 13 |
| 25 |
=
| 12 |
| 25 |
点评:此题考查四则混合运算,注意运算顺序和运算法则,先算括号里面的除,再算括号里的加,最后算减.
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