题目内容
计算:
(1)
÷
(2)
÷8
(3)2
÷
.
(1)
| 15 |
| 28 |
| 5 |
| 7 |
(2)
| 4 |
| 15 |
(3)2
| 1 |
| 3 |
| 14 |
| 15 |
分析:根据分数除法的计算法则:甲数除以乙数(0除外),等于甲数乘乙数的倒数;据此解答.
解答:解:(1)
÷
,
=
×
,
=
;
(2)
÷8,
=
×
,
=
;
(3)2
÷
,
=
×
,
=
.
| 15 |
| 28 |
| 5 |
| 7 |
=
| 15 |
| 28 |
| 7 |
| 5 |
=
| 3 |
| 4 |
(2)
| 4 |
| 15 |
=
| 4 |
| 15 |
| 1 |
| 8 |
=
| 1 |
| 30 |
(3)2
| 1 |
| 3 |
| 14 |
| 15 |
=
| 7 |
| 3 |
| 15 |
| 14 |
=
| 5 |
| 2 |
点评:此题应根据分数除法的计算方法进行解答.
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