Missing Numbers in Equations

Missing Numbers in Equations

7th Grade · Math · 30 min

Lesson Preview

Learning Objective

I can solve addition and subtraction equations with a missing variable where the sum or difference is less than or equal to 25.

  • 1

    In algebra, solving an equation means figuring out the unknown values or variables.

  • 2

    To keep an equation balanced, you must do the same thing to both sides.

  • 3

    To isolate a variable when something is being subtracted, you must add to both sides.