5.OA.1:
Operations And Algebraic Thinking
Write And Interpret Numerical Expressions.
Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
5.OA.2:
Operations And Algebraic Thinking
Write And Interpret Numerical Expressions.
Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation "add 8 and 7, then multiply by 2" as 2 x (8 + 7). Recognize that 3 x (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.