Large Numbers Cross Puzzle

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Across
  1. 2. one thousand six hundred fifty-eight
  2. 6. add 1675 and 3632
  3. 7. subtract 1229 from 2534
  4. 9. subtract 6132 from 7624
  5. 12. add 11678 and 22597
  6. 14. six thousand seven hundred fifty-seven
  7. 16. three thousand five hundred sixty-seven
  8. 17. add 2332 and 5321
  9. 18. subtract 1523 from 4345
Down
  1. 1. 7466 rounded to the nearest thousands
  2. 3. 6178 rounded to the nearest hundreds
  3. 4. add 1111 and 7554
  4. 5. 8345 rounded to the nearest thousands
  5. 7. 1000+800+30+8
  6. 8. subtract 1336 from 2532
  7. 10. 4000+600+70+7
  8. 11. 9000+500+40+5
  9. 12. add 1363 and 2822
  10. 13. add 2132 and 7424
  11. 15. seven thousand five hundred seventy-seven