Des is not a puzzle noob

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Across
  1. 5. Ninety divided by thirty
  2. 6. Four times as much
  3. 8. Three times as much
  4. 10. Liquid you put in cereal
  5. 11. Holiday in April
  6. 12. A person, place, or thing
Down
  1. 1. Twice as much
  2. 2. Desert animal with a hump
  3. 3. Largest animal in the sea
  4. 4. Continent that contains Sudan
  5. 7. Ocean between USA and England
  6. 8. Thanksgiving bird
  7. 9. Yellow + blue