用“○”画出下表中所有6的倍数. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 39 31 32 33 34 35 36 37 38 39 40
1 | 2 | 3 | 4 | 5 | 6○ | 7 | 8 | 9 | 10 |
11 | 12○ | 13 | 14 | 15 | 16 | 17 | 18○ | 19 | 20 |
21 | 22 | 23 | 24○ | 25 | 26 | 27 | 28 | 29 | 39 |
31 | 32 | 33 | 34 | 35 | 36○ | 37 | 38 | 39 | 40 |