Numbers

123456789101112131415161718
Across
  1. 3. - "A perfect score in many games"
  2. 5. - "Numbers divisible by 2 without a remainder"
  3. 8. - "The first counting number"
  4. 9. - "A very large number with six zeros"
  5. 11. - "A hand's worth of fingers"
  6. 12. - "Double a decade"
  7. 14. - "A lucky number"
  8. 17. - "Half a dozen"
  9. 18. - "One more than two"
Down
  1. 1. - "A dozen"
  2. 2. - "A big number with three zeros"
  3. 4. - "A pair or a couple"
  4. 5. - "One more than ten"
  5. 6. - "A number greater than one with no divisors other than one and itself"
  6. 7. - "An even larger number with nine zeros"
  7. 10. - "Numbers that can't be divided evenly by 2"
  8. 11. - "Two pairs or twice two"
  9. 13. - "A decade in years"
  10. 15. - "A cube's number of sides"
  11. 16. - "One less than ten"