Johns Number Puzzle

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Across
  1. 4. eight million eight hundred twenty six thousand six hundred eighty eight
  2. 5. 300000+60000+9000+900+90+7
  3. 6. four million seven hundred sixty five thousand nine hundred forty nine
  4. 8. 18,676+6,837
  5. 9. subtract 5623 from 9752
  6. 10. 18,985-5,554
  7. 12. 295628+505565
  8. 15. round 69,082 to the greatest place
  9. 16. 29563 round to the nearest 10000
  10. 17. 8000000+200000+10000+8000+10+2
Down
  1. 1. 4000000+900000+80000+7000+600+20+3
  2. 2. 566464 + 95,621
  3. 3. 989+697825
  4. 7. round 759340 to the nearest hundreds place
  5. 11. 5644656-5323266
  6. 13. ninety thousand one hundred three
  7. 14. 900,892-600,068
  8. 18. Round 78,234 to greatest place