题目内容
直接写得数.
|
|
| ||||||||||
|
|
9×
| ||||||||||
|
|
分析:
×
,
×12,
×
和9×
,属于分数乘法计算,注意约分,把结果写成最简分数或整数;
÷
,
÷
,
÷
和
÷12,属于分数除法计算,先把除法改为乘法,再进行计算.
| 1 |
| 4 |
| 2 |
| 5 |
| 5 |
| 6 |
| 7 |
| 12 |
| 3 |
| 14 |
| 7 |
| 18 |
| 8 |
| 9 |
| 8 |
| 3 |
| 3 |
| 10 |
| 10 |
| 3 |
| 8 |
| 9 |
| 3 |
| 7 |
| 4 |
| 7 |
解答:解:
×
=
;
×12=10;
×
=
;
÷
=
;
÷
=
; 9×
=3
;
÷
=2
;
÷12=
.
故答案为:
,10,
,
,
,3
,2
,
.
| 1 |
| 4 |
| 2 |
| 5 |
| 1 |
| 10 |
| 5 |
| 6 |
| 7 |
| 12 |
| 3 |
| 14 |
| 1 |
| 8 |
| 8 |
| 9 |
| 8 |
| 3 |
| 1 |
| 3 |
| 3 |
| 10 |
| 10 |
| 3 |
| 9 |
| 100 |
| 7 |
| 18 |
| 1 |
| 2 |
| 8 |
| 9 |
| 3 |
| 7 |
| 2 |
| 27 |
| 4 |
| 7 |
| 1 |
| 21 |
故答案为:
| 1 |
| 10 |
| 1 |
| 8 |
| 1 |
| 3 |
| 9 |
| 100 |
| 1 |
| 2 |
| 2 |
| 27 |
| 1 |
| 21 |
点评:此题考查了分数乘法和分数除法的运算,在做题时要注意该约分的要约分.
练习册系列答案
相关题目