Operations and Algebraic Thinking

Write and interpret numerical expressions.
5.OA.1 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.


5.OA.1 Task 1: Target Number
5.OA.1 Task 2: Expression Sets
5.OA.1 Task 3: Leigh's Strategy
5.OA.1 Task 4: Moving Parentheses
5.OA.1 Task 5: Moving Parentheses II

5.OA.2 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 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.
5.OA.2 Task 1: Video Game Scores
5.OA.2 Task 2: Comparing Products
5.OA.2 Task 3: Seeing is Believing
5.OA.2 Task 4: Which Building Has More Rooms?
5.OA.2 Task 5: Which Building Has More Rooms? II