Directed numbers

123456789
Across
  1. 4. Result of multiplication
  2. 6. Less than zero
  3. 8. Result of subtraction
  4. 9. Neither nor negative
Down
  1. 1. Take away
  2. 2. Result of division
  3. 3. Times numbers
  4. 4. Greater than zero
  5. 5. Whole number including negatives
  6. 7. Split into parts