Common Core · High School Algebra · Reasoning with Equations and Inequalities

Standard A.REI.B.3

Free lessons and printable worksheets aligned to Common Core math standard A.REI.B.3.

8 lessons7 worksheets

Lessons for A.REI.B.3

Absolute value inequalitiesClose to zero means trapped between two numbers: an and.Lesson
Compound inequalities: and, orBoth conditions hold; the solution is the overlap.Lesson
Equations with variables on both sidesSubtract the smaller variable term from both sides, then solve.Lesson
Multi-step equationsCollect like terms on each side, then solve as a two-step equation.Lesson
Multi-step inequalitiesDistribute, collect, solve, flip if needed.Lesson
One-step inequalities and the sign flipSame moves as an equation, with one exception coming.Lesson
Solving linear inequalitiesSame moves as an equation, except the sign flips when you multiply or divide by a negative, and why.Lesson
Two-step inequalitiesUndo two operations, watching for the flip.Lesson

Printable Worksheets

Absolute value inequalities worksheet (PDF)Printable worksheet with answer keyPreview
Multi-step equations worksheet (PDF)Printable worksheet with answer keyPreview
Multi-step inequalities worksheet (PDF)Printable worksheet with answer keyPreview
Two-step inequalities worksheet (PDF)Printable worksheet with answer keyPreview