Basic Math Symbols

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Across
  1. 1. calculate expression inside first
  2. 4. ppt
  3. 10. symbol name of mod
  4. 11. symbol name of *
  5. 12. ÷
  6. 14. minus sign
  7. 15. >
  8. 16. ppm
  9. 17. %
  10. 19. ≈
Down
  1. 2. -
  2. 3. ppm
  3. 5. not equal sign
  4. 6. <
  5. 7. •
  6. 8. +
  7. 9. [ ]
  8. 13. *
  9. 18. =
  10. 20. plus sign