Addition 3 and 4 digit numbers.

12345678910
Across
  1. 5. 1123
  2. 7. 504
  3. 8. 8357
  4. 9. 9999
Down
  1. 1. 13359
  2. 2. 6912
  3. 3. 579
  4. 4. 1259
  5. 6. 4670
  6. 10. 2460