Puzzle Detail
Addition Mathdoku Addition 8×8 — Set 5
| 6= | 7= | 3= | 5= | 2= | 21+8 | ||
| 8+ | 1= | 8= | 7= | 5= | |||
| 12+ | 20+4 | 3+ | 8= | ||||
| 2= | 21+ | 6= | 5= | ||||
| 1= | 4 | 8= | 18+ | ||||
| 18+ | 6 | 15+ | 3+ | ||||
| 9+ | 6+ | 8= | 16+ | ||||
| 8= | 12+ | 15+4 | 1= |
Show solution
| 1 | 6 | 7 | 3 | 5 | 2 | 4 | 8 |
| 3 | 4 | 1 | 6 | 8 | 7 | 5 | 2 |
| 6 | 5 | 3 | 4 | 2 | 1 | 8 | 7 |
| 2 | 1 | 8 | 7 | 6 | 5 | 3 | 4 |
| 7 | 3 | 2 | 1 | 4 | 8 | 6 | 5 |
| 4 | 8 | 6 | 5 | 7 | 3 | 2 | 1 |
| 5 | 2 | 4 | 8 | 1 | 6 | 7 | 3 |
| 8 | 7 | 5 | 2 | 3 | 4 | 1 | 6 |
Solver Notes
Our 8x8 addition mathdoku puzzles challenge you to fill a 8x8 grid using only addition (+) cage targets — great for arithmetic practice and logic training.
What is a 8x8 addition mathdoku?
A 8x8 addition mathdoku is a 8x8 number grid where every cage uses addition (+) as its operation. Fill 1–8 in each row and column with no repeats while satisfying all cage targets.
Can I print this puzzle?
Yes — use the Print button on any puzzle page to get a clean PDF of the 8x8 addition mathdoku with solution.
Who are 8x8 addition mathdoku puzzles best for?
Advanced players and adults who want to practice addition in a logic-puzzle context.