Grade 3 - Patterns and Relations
Standard 3.PR.2 - Practice writing variable addition, subtraction, multiplication and division sentences to represent a word problem.
Included Skills: Mixed Equations, Algebra
Demonstrate understanding of equality by solving one-step addition and subtraction equations involving symbols representing an unknown quantity. • Share, compare, and distinguish between understandings and uses of the word equal, including those represented in First Nations and Métis worldviews. • Observe and describe situations relevant to self, family, or community in which a symbol could be used to represent an unknown quantity. • Explain the purpose of the symbol, such as a triangle or a circle, in an addition or subtraction equation. • Compare two equations involving the same operations and quantities, but using different symbols. • Solve addition and subtraction equations concretely, pictorially, or physically. • Verify (concretely, pictorially, or physically) which of a set of given quantities is the solution to a one-step addition or subtraction equation and explain the reasoning. • Generalize strategies, including guess and test, for solving one-step addition and subtraction equations and verify the strategies concretely, pictorially, or physically. • Explain why the unknown in a given addition or subtraction equation has only one value. • Create and solve one-step equations related to situational questions. • Create and solve situational questions that relate to given one-step equations.