Basic Math Symbols

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Across
  1. 7. exponent
  2. 8. √a
  3. 10. approximately equal
  4. 14. plus sign
  5. 15. 1‰
  6. 16. decimal point
  7. 17. times sign
  8. 18. exponent
  9. 19. division slash
Down
  1. 1. remainder calculation
  2. 2. ⁴√a
  3. 3. 1%
  4. 4. ppt
  5. 5. 1 ppb
  6. 6. greater/less than
  7. 9. ³√a
  8. 11. calculate expression inside first
  9. 12. minus sign
  10. 13. calculate expression inside first
  11. 20. less than or equal to