Maths crossword!

12345678910
Across
  1. 3. 1/8 of 100
  2. 4. First prime number after 41.
  3. 7. 4 & 2/3 as a proper fraction
  4. 8. How many squares does a rubix cube have?
  5. 9. Unlucky number
  6. 10. Answer to life, the universe, and everything
Down
  1. 1. 3rd perfect number.
  2. 2. 2.59-1.85
  3. 5. First three digits of pi.
  4. 6. 2x²-3x-9=0
  5. 7. 7x2
  6. 8. 244+107+149+93
  7. 9. Cube root of 1728