21 × 1 = ?
21
1 × 21 = ?
21
21 × 2 = ?
42
2 × 21 = ?
42
21 × 3 = ?
63
3 × 21 = ?
63
21 × 4 = ?
84
4 × 21 = ?
84
21 × 5 = ?
105
5 × 21 = ?
105
21 × 6 = ?
126
6 × 21 = ?
126
21 × 7 = ?
147
7 × 21 = ?
147
21 × 8 = ?
168
8 × 21 = ?
168
21 × 9 = ?
189
9 × 21 = ?
189
21 × 10 = ?
210
10 × 21 = ?
210
21 × 11 = ?
231
11 × 21 = ?
231
21 × 12 = ?
252
12 × 21 = ?
252