Numbers

12345678910
Across
  1. 1. 6 + 7 = ?
  2. 5. 18 - 2 = ?
  3. 7. 4 + 2 = ?
  4. 8. 14 - 5 = ?
  5. 9. 8 + 4 = ?
  6. 10. 17 - 3 = ?
Down
  1. 2. 5 + 6 = ?
  2. 3. 6 + 11 = ?
  3. 4. 10 + 5 = ?
  4. 6. 13 + 6 = ?