Common Core State Standard: 7.EE.A.2

Domain: Expressions & Equations

Theme: Use properties of operations to generate equivalent expressions

Standard Description: Understand that rewriting an expression in different forms in a problem context can shed light on the problem and how the quantities in it are related. For example, a + 0.05a = 1.05a means that "increase by 5%" is the same as "multiply by 1.05."