North Dakota Academic Content Standards
ND.6.EE. Expressions and Equations
Apply and extend previous understandings of arithmetic to algebraic expressions.
6.EE.3. Apply the properties of operations to generate equivalent expressions.
Reason about and solve one-variable equations and inequalities.
6.EE.5. Understand solving an equation or inequality as a process of answering a question: Which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true.