Across
- 6. (=)equality
- 7. approximation
- 9. subtraction
- 11. stand for multiplication, also known as star
- 15. exponent
- 16. both minus and plus operations
- 17. [ ]
- 18. ()
- 19. addition
- 20. division sign
Down
- 1. %
- 2. remainder calculation
- 3. ×
- 4. line division/fraction
- 5. decimal point
- 8. a^b
- 10. both plus and minus operations
- 12. √a
- 13. /
- 14. (ppm)a unit used to describe very small concentrations of a substance in a larger solution