Addition 3 and 4 digit numbers.

12345678910
Across
  1. 2. 8792+4567
  2. 4. 987+272
  3. 7. 357+152
  4. 9. 1234+5678
  5. 10. 8234+123
Down
  1. 1. 9876+123
  2. 3. 456+123
  3. 5. 1230+1230
  4. 6. 452+671
  5. 8. 2314+2356