| Subtraction | 14 | 15 | 16 | 17 | 18 |
| 7 | 14-7 = 7 | 15-7 = 8 | 16-7 = 9 | 17-7 = 10 | 18-7 = 11 |
| 8 | 14-8 = 6 | 15-8 = 7 | 16-8 = 8 | 17-8 = 9 | 18-8 = 10 |
| 9 | 14-9 = 5 | 15-9 = 6 | 16-9 = 7 | 17-9 = 8 | 18-9 = 9 |
| 10 | 14-10 = 4 | 15-10 = 5 | 16-10 = 6 | 17-10 = 7 | 18-10 = 8 |
| 11 | 14-11 = 3 | 15-11 = 4 | 16-11 = 5 | 17-11 = 6 | 18-11 = 7 |
| Subtraction | 13.1 | 13.2 | 13.3 | 13.4 | 13.5 | 13.6 |
| 6.1 | 13.1-6.1 = 7 | 13.2-6.1 = 7.1 | 13.3-6.1 = 7.2 | 13.4-6.1 = 7.3 | 13.5-6.1 = 7.4 | 13.6-6.1 = 7.5 |
| 6.2 | 13.1-6.2 = 6.9 | 13.2-6.2 = 7 | 13.3-6.2 = 7.1 | 13.4-6.2 = 7.2 | 13.5-6.2 = 7.3 | 13.6-6.2 = 7.4 |
| 6.3 | 13.1-6.3 = 6.8 | 13.2-6.3 = 6.9 | 13.3-6.3 = 7 | 13.4-6.3 = 7.1 | 13.5-6.3 = 7.2 | 13.6-6.3 = 7.3 |
| 6.4 | 13.1-6.4 = 6.7 | 13.2-6.4 = 6.8 | 13.3-6.4 = 6.9 | 13.4-6.4 = 7 | 13.5-6.4 = 7.1 | 13.6-6.4 = 7.2 |
| 6.5 | 13.1-6.5 = 6.6 | 13.2-6.5 = 6.7 | 13.3-6.5 = 6.8 | 13.4-6.5 = 6.9 | 13.5-6.5 = 7 | 13.6-6.5 = 7.1 |
| 6.6 | 13.1-6.6 = 6.5 | 13.2-6.6 = 6.6 | 13.3-6.6 = 6.7 | 13.4-6.6 = 6.8 | 13.5-6.6 = 6.9 | 13.6-6.6 = 7 |