ADDITION

1234567
Across
  1. 3. 100 LESS THAN 100000
  2. 4. 4000-10
  3. 5. 3000+1050+2700
  4. 7. 600 LESS THAN 2500
Down
  1. 1. 3890-0
  2. 2. 10 MORE THAN SUCCESSOR OF 5005
  3. 4. 3400+400
  4. 6. 5000 M0RE THAN 500