Amari Number Puzzle

12345678
Across
  1. 2. 2/3 as a decimal
  2. 4. 5 cubed
  3. 5. 30 as a improper fraction
  4. 6. 3 as a improper fraction
  5. 8. 1/3 as a decimal
Down
  1. 1. 4 squared
  2. 2. 1/2 as decimal
  3. 3. 9x=90
  4. 4. 90 squared 90 squared = x squared
  5. 5. 8 to the second power
  6. 7. 3 to the third power