Basic Math Symbol

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Across
  1. 1. both plus and minus
  2. 5. ≈
  3. 6. +
  4. 7. -
  5. 9. ÷
  6. 10. power; caret
  7. 11. /
  8. 13. calculate the expression first;()
  9. 14. ppt
  10. 15. both minus and plus
  11. 17. >
  12. 18. <
Down
  1. 1. ppb
  2. 2. mod
  3. 3. decimal separator
  4. 4. []
  5. 6. *
  6. 8. x
  7. 12. ppm
  8. 16. %