Puzzle Detail
Classic Mathdoku Classic 9×9 Medium — Set 51
| 1- | 13+ | 9+5 | 3= | 8= | 7= | |||
| 378x | 216x | 12x | 2 | 6+ | 72x4 | |||
| 8= | 7 | 1 | 10x | |||||
| 4= | 5= | 5- | 6+ | 1- | 8= | 1= | ||
| 2=2 | 8 | 63x | 6= | 3= | ||||
| 14+ | 2/ | 3-5 | 5- | 11+ | 36x | 7= | ||
| 4+ | 4 | 6- | 9= | 12x | 6 | |||
| 1 | 24x | 2= | 5= | 7= | 4= | 6= | 1- | |
| 9= | 6= | 1= | 8= | 3 | 15+ |
Show solution
| 6 | 1 | 9 | 4 | 5 | 3 | 8 | 7 | 2 |
| 7 | 9 | 3 | 8 | 6 | 2 | 5 | 1 | 4 |
| 8 | 6 | 7 | 3 | 4 | 1 | 2 | 5 | 9 |
| 4 | 5 | 6 | 9 | 2 | 7 | 3 | 8 | 1 |
| 5 | 7 | 1 | 2 | 8 | 9 | 4 | 6 | 3 |
| 2 | 8 | 5 | 1 | 3 | 6 | 9 | 4 | 7 |
| 3 | 4 | 8 | 7 | 9 | 5 | 1 | 2 | 6 |
| 1 | 3 | 2 | 5 | 7 | 4 | 6 | 9 | 8 |
| 9 | 2 | 4 | 6 | 1 | 8 | 7 | 3 | 5 |
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.