题目内容
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 4 |
| 5 |
| 6 |
| 1 |
| 6 |
| 3 |
| 4 |
| 3 |
| 4 |
×
×
(判断对错)改正:
| 4 |
| 3 |
| 4 |
| 3 |
分析:
÷
+
÷
先把除法变成乘法,再根据乘法分配律简算.
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 4 |
解答:解:
÷
+
÷
=
×
+
×
=(
+
)×
=
;
所以原题错,正确的结果是
.
故答案为:×,
.
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
| 3 |
| 4 |
=
| 5 |
| 6 |
| 4 |
| 3 |
| 1 |
| 6 |
| 4 |
| 3 |
=(
| 5 |
| 6 |
| 1 |
| 6 |
| 4 |
| 3 |
=
| 4 |
| 3 |
所以原题错,正确的结果是
| 4 |
| 3 |
故答案为:×,
| 4 |
| 3 |
点评:解决本题要注意分数除法变成乘法时的两变:除号变乘号,除数变倒数.
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