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# Operations and Algebraic Thinking 218-221

Parts of algebraic expressions: Variables & expressionsSubstitution & evaluating expressions: Variables & expressionsEvaluating expressions with multiple variables: Variables & expressionsExpression value intuition: Variables & expressionsEvaluating expressions word problems: Variables & expressions

Algebraic equations basics: Equations & inequalities introductionOne-step equations intuition: Equations & inequalities introductionOne-step addition & subtraction equations: Equations & inequalities introductionOne-step multiplication and division equations: Equations & inequalities introduction

Finding mistakes in one-step equations: Equations & inequalities introductionOne-step equation word problems: Equations & inequalities introductionIntro to inequalities with variables: Equations & inequalities introductionDependent and independent variables: Equations & inequalities introductionAnalyzing relationships between variables: Equations & inequalities introduction

Test your knowledge of the skills in this course. Have a test coming up? The Course challenge can help you understand what you need to review.