题目内容
| 12 |
| 5 |
| 5 |
| 6 |
| 3 |
| 4 |
| 4 |
| 5 |
分析:本题运用乘法的分配律进行计算比较简便,最后把结果化简.
解答:解:
×(
+
)+
,
=
×
+
×
+
,
=2+
+
,
=2+
,
=4
.
| 12 |
| 5 |
| 5 |
| 6 |
| 3 |
| 4 |
| 4 |
| 5 |
=
| 12 |
| 5 |
| 5 |
| 6 |
| 12 |
| 5 |
| 3 |
| 4 |
| 4 |
| 5 |
=2+
| 9 |
| 5 |
| 4 |
| 5 |
=2+
| 13 |
| 5 |
=4
| 3 |
| 5 |
点评:本题考查了乘法的分配律的运用及分数的四则混合运算.
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