Maryland College and Career-Ready Standards
MD.MA.4.OA. Operations and Algebraic Thinking (OA)
4.OA.A. Use the four operations with whole numbers to solve problems.
4.OA.A.2. Major Standard: 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.
4.OA.A.2.1. Ability to solve various types of word problems involving multiplication comparison by using drawings (CCSS, Page 89, Table 2) through initial use of concrete materials and pictures, leading to the use of equations as a tool in solutions.
4.OA.A.3. Major Standard: 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.A.3.1. Ability to identify which of the four operations will be used to solve multi-step word problems and accurately represent the problem with the corresponding equations.
4.OA.A.3.2. Ability to use the context of the problem to interpret the remainder of a problem to appropriately determine if it should be discarded, replaced with the next highest whole number answer, or used as the answer to the question.
4.OA.A.3.3. Ability to use mental math strategies, properties of operations, relationships between operations, and estimation strategies to solve multistep word problems.