题目内容
计算下面各题.
|
| ||||||||||
|
| ||||||||||
|
(1)
×21×
=
×
×21
=
×21
=
;
(2)
÷5×
=
×
×
;
(3)
÷
÷
=
×
×
=2;
(4)
÷
÷24
=
×
×
=
;
(5)
×
÷8
=
×
×
=
.
| 7 |
| 12 |
| 3 |
| 10 |
=
| 7 |
| 12 |
| 3 |
| 10 |
=
| 7 |
| 40 |
=
| 147 |
| 40 |
(2)
| 4 |
| 9 |
| 5 |
| 6 |
=
| 4 |
| 9 |
| 1 |
| 5 |
| 5 |
| 6 |
| 2 |
| 27 |
(3)
| 7 |
| 8 |
| 3 |
| 4 |
| 7 |
| 12 |
=
| 7 |
| 8 |
| 4 |
| 3 |
| 12 |
| 7 |
=2;
(4)
| 8 |
| 5 |
| 5 |
| 9 |
=
| 8 |
| 5 |
| 9 |
| 5 |
| 1 |
| 24 |
=
| 3 |
| 25 |
(5)
| 4 |
| 3 |
| 1 |
| 8 |
=
| 4 |
| 3 |
| 1 |
| 8 |
| 1 |
| 8 |
=
| 1 |
| 48 |
练习册系列答案
相关题目