BASIC MATH SYMBOLS

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Across
  1. 4. ≈ (meaning)
  2. 7. a^b (symbol name)
  3. 9. √ (symbol name)
  4. 10. > (meaning)
  5. 11. < (meaning)
  6. 14. * (meaning)
  7. 15. ppb (symbol name)
  8. 18. a¹ (meaning)
  9. 19. [_] (symbol name)
  10. 20. X (symbol name)
Down
  1. 1. ≠ (meaning)
  2. 2. - (meaning)
  3. 3. ⁴√a (symbol name)
  4. 5. % (symbol name)
  5. 6. (_) (symbol name)
  6. 8. mod (symbol name)
  7. 12. + (meaning)
  8. 13. / (meaning)
  9. 16. = (meaning)
  10. 17. n√a (symbol name)