Standard
- CCSS.Math.Content.2.OA
- Operations and Algebraic Thinking
- CCSS.Math.Content.2.OA.A
- Represent and solve problems involving addition and subtraction.
- CCSS.Math.Content.2.OA.A.1
- 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.