Crossword Puzzle- Addition & Subtraction

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123456789
Across
  1. 1. 198 + 56 + 2
  2. 3. ------ - 1 = 87684
  3. 5. greatest 4 digit number -1
  4. 7. 7999 + 1
  5. 8. 4567- 100
  6. 9. ----- + 0 = 5613
Down
  1. 2. 57789 - 1000
  2. 4. 5000 - _____ = 600
  3. 5. 6700 + 986 = _____ + 6700
  4. 6. 7433 - _____ = 0