Number Puzzle

123456789101112131415
Across
  1. 4. The number equivalent to the product of two and ten
  2. 6. The number equivalent to the product of seven and four
  3. 9. Naught; the number before one
  4. 10. An arithmetical value, expressed by a word, symbol or figure
  5. 12. The number equivalent to the product of two and five
  6. 13. A cardinal number; twenty plus five
  7. 14. The number equivalent to the product of seventeen and five
Down
  1. 1. The number equivalent to the product of thirty-one and two
  2. 2. The number equivalent to the product of seven and two
  3. 3. The number equivalent to the product of three and four
  4. 5. The number equivalent to the product of four and ten
  5. 7. equivalent to the sum of one and one
  6. 8. One more than sixteen
  7. 11. The number equivalent to the product of seven and ten
  8. 15. The number equivalent of the product of ten and ten