Puzzle Detail
Classic Mathdoku Classic 9×9 Medium — Set 80
| 6+ | 2 | 9= | 1- | |||||
| 7= | 9= | 36x | 6 | 2- | 15x | 128x | 2= | |
| 6x2 | 2/ | 1= | 5= | 7= | 45x | |||
| 8 | 7= | 4= | 144x | 6= | 1= | |||
| 11+6 | 96x | 3- | 7=7 | 2- | 2 | 1 | ||
| 5 | 9+ | 9 | 27x | 8= | ||||
| 1= | 9+ | 8= | 2= | 378x | 6= | 3 | ||
| 10+ | 5= | 4/ | 126x | 3- | ||||
| 56x | 14+2 | 144x | 9+ |
Show solution
| 4 | 2 | 6 | 9 | 3 | 1 | 5 | 8 | 7 |
| 7 | 9 | 1 | 6 | 5 | 3 | 8 | 4 | 2 |
| 2 | 6 | 3 | 1 | 8 | 5 | 4 | 7 | 9 |
| 3 | 8 | 7 | 4 | 9 | 2 | 6 | 1 | 5 |
| 6 | 3 | 8 | 5 | 7 | 4 | 2 | 9 | 1 |
| 5 | 4 | 2 | 7 | 6 | 9 | 1 | 3 | 8 |
| 1 | 5 | 4 | 8 | 2 | 7 | 9 | 6 | 3 |
| 9 | 1 | 5 | 3 | 4 | 8 | 7 | 2 | 6 |
| 8 | 7 | 9 | 2 | 1 | 6 | 3 | 5 | 4 |
Solver Notes
Our classic mathdoku puzzles mix all four operations (addition, subtraction, multiplication, division) just like the original KenKen format.
What makes a mathdoku puzzle classic?
Classic mathdoku uses cages with any of the four arithmetic operations, matching the original KenKen-style puzzle format.
Are classic mathdoku puzzles good for beginners?
Start with the 4x4 classic grid — it's the easiest entry point into the full mathdoku experience.
Where can I print classic mathdoku?
Every puzzle page on Freemathdoku.com has a Print button that generates a clean PDF with the answer key.