Addition subtraction

12345678910
Across
  1. 2. 10-4
  2. 4. 9-1
  3. 6. 8-6
  4. 8. 2-1
  5. 9. 16-5
  6. 10. 3-0
Down
  1. 1. 21-3
  2. 3. 11-6
  3. 5. 14-2
  4. 7. 5-1