题目内容
脱式计算:
×(
-
÷4).
| 6 |
| 7 |
| 6 |
| 8 |
| 1 |
| 2 |
分析:先计算小括号里面的除法和减法,再计算括号外面的乘法.
解答:解:
×(
-
÷4)
=
×(
-
)
=
×
=
.
| 6 |
| 7 |
| 6 |
| 8 |
| 1 |
| 2 |
=
| 6 |
| 7 |
| 6 |
| 8 |
| 1 |
| 8 |
=
| 6 |
| 7 |
| 5 |
| 8 |
=
| 15 |
| 28 |
点评:考查了分数四则混合运算,注意运算顺序和运算法则.
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