A Student and Parent Guide: Write and interpret numerical expressions.CCSS.MATH.CONTENT.5.OA.A.1Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.CCSS.MATH.CONTENT.5.OA.A.2Write 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 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as