numbers

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Across
  1. 3. A very large number
  2. 5. One more than five
  3. 6. A pair, often used in counting
  4. 10. A million million
  5. 11. Twice ten
  6. 13. One less than five
  7. 14. A dozen
  8. 15. a common large round number
  9. 16. Considered lucky in many cultures
  10. 17. A thousand million
Down
  1. 1. Half of ten
  2. 2. Half of a hundred
  3. 4. One less than ten
  4. 6. A common base for counting
  5. 7. The first cardinal number
  6. 8. Often used in multiplication tables
  7. 9. One more than ten
  8. 11. One more than two
  9. 12. A larger round number