Math Games

Grade 3 - Patterns and Relations

Standard 3.PR.2 - Practice using addition and subtraction to solve for a variable.

Included Skills:

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.