Basic Math Symbols

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Across
  1. 4. 1%=1/100
  2. 6. calculate expression inside first
  3. 8. <
  4. 10. remainder calculation
  5. 11. minus sign
  6. 12. approximation
  7. 14. plus sign
  8. 16. ³√a
  9. 17. multiplication
  10. 20. ppm
Down
  1. 1. √a
  2. 2. a^b
  3. 3. ⁴√a
  4. 5. *
  5. 7. 2^3=8
  6. 9. division
  7. 13. decimal point
  8. 15. greater than or equal
  9. 18. ()
  10. 19. division slash