Puzzle Detail
Classic Mathdoku Classic 8×8 Medium — Set 2
| 10+ | 20x5 | 8= | 168x | ||||
| 2x1 | 35x | 3= | 2= | 5= | |||
| 5- | 15+ | 7 | 4 | 6/ | 1 | ||
| 21x | 3 | 18+ | 9+ | 4- | |||
| 4= | 14+8 | 6= | 3- | ||||
| 8= | 5= | 2= | 18x | 21x | 4/ | ||
| 3/ | 1 | 4= | 7= | ||||
| 1-6 | 12+ | 80x | 5- |
Show solution
| 2 | 6 | 1 | 4 | 5 | 8 | 7 | 3 |
| 1 | 4 | 7 | 3 | 6 | 2 | 8 | 5 |
| 3 | 8 | 5 | 2 | 7 | 4 | 6 | 1 |
| 7 | 3 | 8 | 5 | 4 | 1 | 2 | 6 |
| 4 | 7 | 3 | 8 | 1 | 6 | 5 | 2 |
| 8 | 5 | 2 | 6 | 3 | 7 | 1 | 4 |
| 5 | 2 | 6 | 1 | 8 | 3 | 4 | 7 |
| 6 | 1 | 4 | 7 | 2 | 5 | 3 | 8 |
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.