Grade 2 - Operations and Algebraic Thinking
Standard 2.OA.A.1 - Analyze the input and the output for each row of the table. Find the rule that describes this relationship.
Included Skills: Mixed Equations, Number Patterns
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.