The table below gives an example of an Old Babylonian single multiplication table with principal number 20.
| 20 times 1 | 20 |
| times 2 | 40 |
| times 3 | 1 |
| times 4 | 1,20 |
| times 5 | 1,40 |
| times 6 | 2 |
| times 7 | 2,20 |
| times 8 | 2,40 |
| times 9 | 3 |
| times 10 | 3,20 |
| times 11 | 3,40 |
| times 12 | 4 |
| times 13 | 4,20 |
| times 14 | 4,40 |
| times 15 | 5 |
| times 16 | 5,20 |
| times 17 | 5,40 |
| times 18 | 6 |
| times 19 | 6,20 |
| times 20 | 6,40 |
| times 30 | 10 |
| times 40 | 13,20 |
| times 50 | 16,40 |
Go up to Mesoptamian Mathematics Home Page.