Across
- 2. multiplication
- 6. calculate expression inside first
- 9. ppb
- 14. both plus and minus operation
- 15. approximately equal
- 16. less than or equal to
- 18. %
- 20. power
Down
- 1. calculate expression inside first
- 3. times sign
- 4. minus sign
- 5. decimal point
- 7. Equal sign
- 8. both minus and plus operation
- 10. ppt
- 11. calculation modulo
- 12. horizontal line/fraction
- 13. plus sign
- 17. ppm
- 19. exponent