题目内容
(1)8×
(2)
×9
(3)28×
(4)
×21.
| 3 |
| 4 |
(2)
| 5 |
| 18 |
(3)28×
| 6 |
| 7 |
(4)
| 5 |
| 14 |
(1)8×
=6,
(2)
×9=
,
(3)28×
=24,
(4)
×21=
.
| 3 |
| 4 |
(2)
| 5 |
| 18 |
| 5 |
| 2 |
(3)28×
| 6 |
| 7 |
(4)
| 5 |
| 14 |
| 15 |
| 2 |
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