题目内容
计算.
4÷
=4×
=
÷
=
×
=
4÷
| 8 |
| 15 |
| ( ) |
| ( ) |
| 12 |
| 25 |
| 24 |
| 35 |
| 12 |
| 25 |
| ( ) |
| ( ) |
21÷
|
18÷
|
| ||||||||
|
15÷
|
|
考点:分数除法
专题:运算顺序及法则
分析:此题属于分数的除法,把除法变为乘法,能约分的要约分.
解答:
解:(1)4÷
=4×
=
;
(2)
÷
=
×
=
;
(3)21÷
=21×
=27;
(4)18÷
=18×
=21;
(5)
÷
=
×6=
;
(6)
÷6=
×
=
;
(7)15÷
=15×
=18;
(8)
÷
=
×
=
.
故答案为:
,
;
,
.
| 8 |
| 15 |
| 15 |
| 8 |
| 15 |
| 2 |
(2)
| 12 |
| 25 |
| 24 |
| 35 |
| 12 |
| 25 |
| 35 |
| 24 |
| 7 |
| 10 |
(3)21÷
| 7 |
| 9 |
| 9 |
| 7 |
(4)18÷
| 6 |
| 7 |
| 7 |
| 6 |
(5)
| 7 |
| 9 |
| 1 |
| 6 |
| 7 |
| 9 |
| 14 |
| 3 |
(6)
| 7 |
| 9 |
| 7 |
| 9 |
| 1 |
| 6 |
| 7 |
| 54 |
(7)15÷
| 5 |
| 6 |
| 6 |
| 5 |
(8)
| 14 |
| 25 |
| 4 |
| 5 |
| 14 |
| 25 |
| 5 |
| 4 |
| 7 |
| 10 |
故答案为:
| 15 |
| 8 |
| 15 |
| 2 |
| 35 |
| 24 |
| 7 |
| 10 |
点评:此题考查了分数除法的计算,除以一个数等于乘这个数的倒数,能约分的要约分.
练习册系列答案
相关题目
一块雪糕的体积约是18( )
| A、米3 |
| B、分米3 |
| C、厘米3 |