题目内容
(3
-1
)×2
÷4
.
| 5 |
| 6 |
| 3 |
| 4 |
| 2 |
| 5 |
| 1 |
| 2 |
分析:先算括号里面的减法,再算括号外面的乘法,最后算除法.
解答:解:(3
-1
)×2
÷4
,
=
×
÷
,
=5×
,
=
.
| 5 |
| 6 |
| 3 |
| 4 |
| 2 |
| 5 |
| 1 |
| 2 |
=
| 25 |
| 12 |
| 12 |
| 5 |
| 9 |
| 2 |
=5×
| 2 |
| 9 |
=
| 10 |
| 9 |
点评:此题考查分数的四则混合运算,要按照运算顺序进行计算.
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