Puzzle Detail
Classic Mathdoku Classic 9×9 Medium — Set 98
| 1=1 | 3= | 21+ | 2= | 3- | 8= | 5=5 | ||
| 15x | 5- | 2- | 3/2 | 9/ | ||||
| 4= | 6= | 1= | 3= | 2=2 | 15+7 | |||
| 5 | 4+ | 2= | 8x | 9=9 | 4= | |||
| 12+ | 27x | 6= | 3- | 5= | 3= | 4- | ||
| 17+ | 8= | 9 | 7= | 2- | ||||
| 10+ | 12+ | 20x | 27x | 42x | ||||
| 3/6 | 1= | 4 | 8= | 9=9 | 3= | |||
| 9= | 280x | 1- | 28x | 5 | 12+ |
Show solution
| 1 | 3 | 6 | 7 | 9 | 2 | 4 | 8 | 5 |
| 3 | 4 | 8 | 5 | 2 | 6 | 7 | 1 | 9 |
| 5 | 9 | 4 | 6 | 1 | 3 | 2 | 7 | 8 |
| 7 | 5 | 3 | 2 | 8 | 1 | 9 | 4 | 6 |
| 4 | 7 | 1 | 9 | 6 | 8 | 5 | 3 | 2 |
| 6 | 8 | 9 | 3 | 7 | 5 | 1 | 2 | 4 |
| 8 | 1 | 2 | 4 | 5 | 9 | 3 | 6 | 7 |
| 2 | 6 | 5 | 1 | 4 | 7 | 8 | 9 | 3 |
| 9 | 2 | 7 | 8 | 3 | 4 | 6 | 5 | 1 |
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.