numbers

12345678910111213
Across
  1. 1. 1.50x2-1
  2. 3. 50/10
  3. 5. 5+5
  4. 6. six seven -six
  5. 7. meme
  6. 9. 25/5
  7. 10. 7x2
  8. 12. 1+4x2
  9. 13. 21
Down
  1. 1. Friday the thirteen
  2. 2. 50/5-4
  3. 4. 1.50x2
  4. 6. six seven -seven
  5. 8. is that the bit of 87
  6. 11. 4x3