Math

1234567891011121314151617181920
Across
  1. 3. both plus and minus operations
  2. 7. subtraction
  3. 10. division / fraction
  4. 11. 1‰ = 1/1000 = 0.1%
  5. 12. 1ppb = 1/1000000000
  6. 13. approximation
  7. 16. 4√a ⋅ 4√a ⋅ 4√a ⋅ 4√a = a
  8. 18. 1ppm = 1/1000000
  9. 19. calculate expression inside first
  10. 20. 3√a ⋅ 3√a ⋅ 3√a = a
Down
  1. 1. addition
  2. 2. multiplication
  3. 4. √a ⋅ √a = a
  4. 5. equality
  5. 6. decimal point, decimal separator
  6. 8. inequality
  7. 9. remainder calculation
  8. 14. 1% = 1/100
  9. 15. both minus and plus operations
  10. 17. calculate expression inside first