BASIC MATH SYMBOLS

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Across
  1. 4. %
  2. 7. ppb
  3. 8. equal sign
  4. 9. ppt
  5. 14. plus sign
  6. 17. √a √a = a
  7. 18. times sign
  8. 20. decimal point, decimal separator
Down
  1. 1. ppm
  2. 2. ‰
  3. 3. >
  4. 5. /
  5. 6. remainder calculation
  6. 10. <
  7. 11. a^b
  8. 12. exponent
  9. 13. []
  10. 15. not equal sign
  11. 16. -
  12. 19. calcute expression inside first