Math Mind

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Across
  1. 5. 3,584,397 + 839,542
  2. 6. 500,398,417 + 5,483 + 89
  3. 8. 73,084 rounded to the nearest ten thousand
  4. 11. 5,888,092 rounded to the nearest 10
  5. 13. 72,412 + 80,550
  6. 15. 900,000,000 + 80,000,000 + 7,000,000 + 600,000 + 50,000 + 4,000 + 300 + 20 + 1
  7. 17. 40,329 rounded to the nearest hundred
  8. 18. three hundred five
Down
  1. 1. 355 rounded to the nearest hundred
  2. 2. six thousand four hundred twenty
  3. 3. 6000 + 500 + 70 + 1
  4. 4. 8,000,000 + 50,000 + 6,000 + 700 + 90 + 3
  5. 7. 8,905,412 rounded to the nearest million
  6. 8. 23,861 - 16,832
  7. 9. 20,000 + 2,000 + 200 + 20 + 2
  8. 10. 800 + 20 + 5
  9. 11. 9,381 - 4,207
  10. 12. Eight thousand five hundred twenty three
  11. 14. 10,000 + 6,000 + 700 + 90 + 3
  12. 16. 9,320 - 400