The document discusses punctuation used in math expressions. Punctuation marks called grouping symbols are used in math to give meaning to expressions, including parentheses, brackets, braces, and the division bar. For example, parentheses tell you to calculate what is inside them first before doing anything else in an expression. Brackets and braces are used instead of parentheses in complicated expressions to make them easier to read. The division bar indicates to evaluate the numerator and denominator of a fraction separately.

1. The Language of Math Punctuation

6. Brackets [ ] & Braces { } The brackets and braces are used instead of parentheses in complicated expressions to make it easier to read. It is difficult to see which left parenthesis goes with which right parenthesis in Using brackets and braces makes it easy to read:

9. Examples Evaluate the quantity in the parentheses first…

10. Examples Evaluate the quantity in the parentheses first…

11. Examples Nothing to it!!

12. Work it out!

13. Work it out!

14. Work it out!

15. Work it out!

16. Work it out!

17. Work it out!

18. Work it out!

19. Work it out!

20. Work it out!

21. Work it out!

22. Work it out!

23. Work it out!

24. Work it out!

25. Work it out!

26. Work it out!