Read the clues and complete the crossword puzzle

12345678
Across
  1. 3. When you add 120 and 50
  2. 4. Predecessor of 1250
  3. 7. Two thousand six hundred ninety
  4. 8. Place of value of 9
Down
  1. 1. The number which lies in between 7120 and 7122
  2. 2. 1000 + 80 + 4
  3. 5. successor of 2399
  4. 6. largest 4 digit number
  5. 7. Place value of 2