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_v1 9×9 Mathdoku Fraction Mathdoku Fourths 9×9 Easy — Set 31
| 3=3 | 6= | 4= | 2=2 | 4+ | 11+ | 7= | 5= | 8= |
| 7 | 1= | 6= | 4= | 2 | 5= | 8= | 7- | |
| 12+ | 4+ | 7=7 | 4= | 8=8 | 9= | |||
| 4= | 2= | 3- | 6=6 | 8= | 3= | 7= | 5 | |
| 7+ | 7+ | 9=9 | 8=8 | 4-4 | 5= | 1=1 | 12+7 | |
| 9= | 5 | 10+7 | 3+2 | 7+ | 6= | |||
| 13+ | 8=8 | 5= | 9+2 | 5-1 | 3= | |||
| 6- | 7= | 4+ | 5=5 | 6= | 9= | 2= | ||
| 8=8 | 5 | 2-7 | 9= | 3= | 10+ | 3-1 |
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| 3 | 6 | 4 | 2 | 1 | 9 | 7 | 5 | 8 |
| 7 | 1 | 6 | 4 | 3 | 2 | 5 | 8 | 9 |
| 5 | 3 | 1 | 6 | 7 | 4 | 8 | 9 | 2 |
| 1 | 4 | 2 | 9 | 6 | 8 | 3 | 7 | 5 |
| 6 | 2 | 9 | 8 | 4 | 5 | 1 | 3 | 7 |
| 9 | 5 | 7 | 3 | 8 | 1 | 2 | 4 | 6 |
| 4 | 9 | 8 | 5 | 2 | 7 | 6 | 1 | 3 |
| 8 | 7 | 3 | 1 | 5 | 6 | 9 | 2 | 4 |
| 2 | 8 | 5 | 7 | 9 | 3 | 4 | 6 | 1 |