题目内容
| 10 |
| 9 |
| 5 |
| 6 |
| 5 |
| 4 |
| 7 |
| 12 |
分析:根据四则混合运算的运算顺序可知,完成本题要先算括号中的减法,再算除法与乘法.
解答:解:
÷
×(
-
)
=
÷
×
,
=
×
×
,
=
.
| 10 |
| 9 |
| 5 |
| 6 |
| 5 |
| 4 |
| 7 |
| 12 |
=
| 10 |
| 9 |
| 5 |
| 6 |
| 8 |
| 12 |
=
| 10 |
| 9 |
| 6 |
| 5 |
| 8 |
| 12 |
=
| 8 |
| 9 |
点评:完成有关于分数的四则混合运算要细心,注意通分、约分.
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