题目内容
算一算.
×
×20=
×
×
=
×
×
=
×
×
=
| 11 |
| 20 |
| 2 |
| 11 |
| 7 |
| 18 |
| 9 |
| 7 |
| 5 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 7 |
| 4 |
| 3 |
(1)
×
×20=2;
(2)
×
×
=
;
(3)
×
×
=
;
(4)
×
×
=
.
| 11 |
| 20 |
| 2 |
| 11 |
(2)
| 7 |
| 18 |
| 9 |
| 7 |
| 5 |
| 6 |
| 5 |
| 12 |
(3)
| 3 |
| 4 |
| 2 |
| 3 |
| 2 |
| 3 |
| 1 |
| 3 |
(4)
| 3 |
| 4 |
| 5 |
| 7 |
| 4 |
| 3 |
| 5 |
| 7 |
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