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