Parentheses, Brackets, and Braces

Use each grouping symbol, one level only, with no nesting.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 18

Grouping symbols say: do this part first. You know parentheses, the curved ones.
Square ones are called brackets. They do the same job.
Curly ones are called braces. Same job again.
Grouping changes the answer. Without any grouping, 4 plus 2 times 5 multiplies first. With parentheses, the adding goes first.

Georgia's K-12 Mathematics Standards:

5.NR.5.1 — Write, interpret, and evaluate simple numerical expressions involving whole numbers with or without grouping symbols to represent actual situations.