Standards

CCSS.Math.Content.6.EE.A

Apply and extend previous understandings of arithmetic to algebraic expressions.

Expressions and Equations

Common Core State Standards (CCSS) Initiative: Mathematics Standards

CCSS.Math.Content.6.EE.A.4 Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them).