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Unit 3 · 4 lessons

Algebraic Expressions and Equations

Write expressions from patterns and words, simplify and compare them, solve linear equations step by step, and rearrange formulas you use in real life.

  • 45 practice questions
  • 32 flashcards
Start lesson 1 →Unit 3 test review →

Lessons

  1. 1Writing Expressions from Patterns and WordsUse variables to describe a whole pattern or situation in one short expression, name the parts of an expression, translate words into algebra, and see where the idea of algebra came from.11 questions
  2. 2Equivalent Expressions and SimplifyingCollect like terms, use the distributive property to expand brackets, and check whether two expressions are equivalent with substitution, tiles, graphs and algebra.11 questions
  3. 3Solving Linear EquationsSolve linear equations with the balance model and inverse operations, including variables on both sides, brackets and fractions, and verify every solution.12 questions
  4. 4Equations in Context and Rearranging FormulasTurn real situations into equations you can solve, and rearrange formulas such as P = 2l + 2w, d = st and C = 2πr to make a different variable the subject.11 questions