题目内容
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
分析:首先把除以7转化为乘7的倒数
,再根据乘法分配律进行简算.
| 1 |
| 7 |
解答:解:
÷7+
×
,
=
×
+
×
,
=(
+
)×
,
=
×
,
=
.
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
=
| 8 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 6 |
| 13 |
=(
| 8 |
| 13 |
| 6 |
| 13 |
| 1 |
| 7 |
=
| 14 |
| 13 |
| 1 |
| 7 |
=
| 2 |
| 13 |
点评:此题主要考查根据整数的运算定律对分数四则混合运算进行简便计算.
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