题目内容
计算(要写出计算过程).
8÷
÷4
÷6
12÷
.
8÷
| 2 |
| 9 |
| 8 |
| 9 |
| 1 |
| 6 |
12÷
| 2 |
| 11 |
考点:分数除法
专题:运算顺序及法则
分析:根据分数除法的计算方法,除以一个数(0除外)就等于乘以这数的倒数,再约分计算即可.
解答:
解:(1)8÷
=8×
=
=36;
(2)
÷4
=
×
=
=
;
(3)
÷6
=
×
=
=
;
(4)12÷
=12×
=
=66.
| 2 |
| 9 |
=8×
| 9 |
| 2 |
=
| 8×9 |
| 2 |
=36;
(2)
| 8 |
| 9 |
=
| 8 |
| 9 |
| 1 |
| 4 |
=
| 8×1 |
| 9×4 |
=
| 2 |
| 9 |
(3)
| 1 |
| 6 |
=
| 1 |
| 6 |
| 1 |
| 6 |
=
| 1×1 |
| 6×6 |
=
| 1 |
| 36 |
(4)12÷
| 2 |
| 11 |
=12×
| 11 |
| 2 |
=
| 12×11 |
| 2 |
=66.
点评:此题考查了分数除法的计算方法及计算能力.
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