Addition of 3-digit numbers

12345678910
Across
  1. 2. 1200+1398
  2. 3. 7500+2378
  3. 5. 3250+1547
  4. 7. 1485+1314
  5. 9. 1900+2099
  6. 10. 3569+6324
Down
  1. 1. 3150+1829
  2. 2. 1100+1139
  3. 4. 2580+6292
  4. 6. 2350+5513
  5. 8. 1750+5647