South Dakota Standards
SD.3.A. Algebra: Students will use the language of algebra to explore, describe, represent, and analyze number expressions and relations that represent variable quantities.
3.A.2. Use a variety of algebraic concepts and methods to solve equations and inequalities.
3.A.2.2. Application: Students are able to solve problems involving addition and subtraction of whole numbers.
3.A.2.2.b. Represent given problem situations using diagrams, models, and symbolic expressions.