Grade 6 · Expressions and Equations

CCSS.MATH.CONTENT.6.EE.B.6

Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.

Read this standard on the official Common Core site

Lessons that teach this standard

• Variables and Expressions: Letters That Stand for Numbers

  What a variable is, how to write an algebraic expression from a sentence, why 3n means multiplication, and how an expression differs from an equation.