题目内容
(7
-5
×
)×(
÷3
)
| 1 |
| 5 |
| 1 |
| 2 |
| 4 |
| 5 |
| 1 |
| 6 |
| 1 |
| 2 |
分析:先算小括号里面的乘法和除法,再算小括号里面的减法,最后算括号外面的乘法.
解答:解:(7
-5
×
)×(
÷3
)
=(7
-
)×
=
×
=
.
| 1 |
| 5 |
| 1 |
| 2 |
| 4 |
| 5 |
| 1 |
| 6 |
| 1 |
| 2 |
=(7
| 1 |
| 5 |
| 22 |
| 5 |
| 1 |
| 21 |
=
| 14 |
| 5 |
| 1 |
| 21 |
=
| 2 |
| 15 |
点评:考查了分数四则混合运算,注意运算顺序和运算法则,然后再进一步计算.
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