Numbers

12345678910111213
Across
  1. 1. - A square's sides
  2. 3. - Half a dozen
  3. 5. - Months in a year
  4. 7. - Three tens
  5. 8. - Days in a week
  6. 9. - A pair
  7. 12. - 10 tens
  8. 13. - Fingers and toes together
Down
  1. 1. - Half of a century
  2. 2. - Lives for a cat, sometimes
  3. 4. - Fingers on a hand
  4. 6. - Sides on an octagon
  5. 7. - Four fives
  6. 10. - The loneliest number
  7. 11. - A trio