| Addition | 16 | 17 | 18 | 19 | 20 |
| 5 | 16+5 = 21 | 17+5 = 22 | 18+5 = 23 | 19+5 = 24 | 20+5 = 25 |
| 6 | 16+6 = 22 | 17+6 = 23 | 18+6 = 24 | 19+6 = 25 | 20+6 = 26 |
| 7 | 16+7 = 23 | 17+7 = 24 | 18+7 = 25 | 19+7 = 26 | 20+7 = 27 |
| 8 | 16+8 = 24 | 17+8 = 25 | 18+8 = 26 | 19+8 = 27 | 20+8 = 28 |
| 9 | 16+9 = 25 | 17+9 = 26 | 18+9 = 27 | 19+9 = 28 | 20+9 = 29 |
| Addition | 15.1 | 15.2 | 15.3 | 15.4 | 15.5 | 15.6 |
| 4.1 | 15.1+4.1 = 19.2 | 15.2+4.1 = 19.3 | 15.3+4.1 = 19.4 | 15.4+4.1 = 19.5 | 15.5+4.1 = 19.6 | 15.6+4.1 = 19.7 |
| 4.2 | 15.1+4.2 = 19.3 | 15.2+4.2 = 19.4 | 15.3+4.2 = 19.5 | 15.4+4.2 = 19.6 | 15.5+4.2 = 19.7 | 15.6+4.2 = 19.8 |
| 4.3 | 15.1+4.3 = 19.4 | 15.2+4.3 = 19.5 | 15.3+4.3 = 19.6 | 15.4+4.3 = 19.7 | 15.5+4.3 = 19.8 | 15.6+4.3 = 19.9 |
| 4.4 | 15.1+4.4 = 19.5 | 15.2+4.4 = 19.6 | 15.3+4.4 = 19.7 | 15.4+4.4 = 19.8 | 15.5+4.4 = 19.9 | 15.6+4.4 = 20 |
| 4.5 | 15.1+4.5 = 19.6 | 15.2+4.5 = 19.7 | 15.3+4.5 = 19.8 | 15.4+4.5 = 19.9 | 15.5+4.5 = 20 | 15.6+4.5 = 20.1 |
| 4.6 | 15.1+4.6 = 19.7 | 15.2+4.6 = 19.8 | 15.3+4.6 = 19.9 | 15.4+4.6 = 20 | 15.5+4.6 = 20.1 | 15.6+4.6 = 20.2 |