Addition

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Across
  1. 2. 4+9
  2. 3. 8+2
  3. 4. 4+1
  4. 5. 1+7
  5. 7. 6+5
  6. 8. 2+5
Down
  1. 1. 7+8
  2. 4. 6+8
  3. 6. 9+3