Operations and Algebraic Thinking

Use the four operations with whole numbers to solve problems.
4.OA.1. Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.
4.OA.1 Task 1: Donut Shop
4.OA.1 Task 2: Three Times as Much

4.OA.2. Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.1
4.OA.2 Task 1: Selling Candy
4.OA.2 Task 2: Clothing Prices
4.OA.2 Task 3: Fund Raiser
4.OA.2 Task 4: Buying Music

4.OA.3. Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
4.OA.3 Task 1: Remainders
4.OA.3 Task 2: How Many Teams?
4.OA.3 Task 3: Making Gift Bags
4.OA.3 Task 4: Enlarging the Yard
4.OA.3 Task 5: How Many Cookies Do We Have?