题目内容
| 7 |
| 11 |
| 1 |
| 9 |
| 4 |
| 11 |
分析:根据分数除法的计算方法,可把
÷9变成
×
,进而用乘法分配律进行简算.
| 7 |
| 11 |
| 7 |
| 11 |
| 1 |
| 9 |
解答:解:
÷9+
×
,
=
×
+
×
,
=
×(
+
),
=
.
| 7 |
| 11 |
| 1 |
| 9 |
| 4 |
| 11 |
=
| 7 |
| 11 |
| 1 |
| 9 |
| 1 |
| 9 |
| 4 |
| 11 |
=
| 1 |
| 9 |
| 7 |
| 11 |
| 4 |
| 11 |
=
| 1 |
| 9 |
点评:此题考查分数的简便计算,根据题中的数据特点,创造出能用运算定律简算的形式,再简算.
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