Expanding single brackets

Expand and simplify each expression.

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Learning objective overview

Master Teaching Guide coverage for this objective.

Current NZC (2007)
  • NA5-8
New NZC (2026)
  • NZC26-P4-ALG-ER-P-Y9-01
  • NZC26-P3-ALG-ER-K-Y8-02
  • NZC26-P3-ALG-ER-P-Y8-04

Resources

  • Alpha textbook: Understanding the distributive rule, Ex 15.01, pg 242
  • Alpha textbook: Simple expanding, Ex 15.02, pg 242
  • Alpha textbook: Expansions with a negative number, Ex 15.03
  • Alpha textbook: Expanding with numbers inside brackets, Ex 15.04, pg 243
  • Alpha textbook: More complex expanding, Ex 15.05, pg 244
  • Alpha textbook: Expanding with a pronumeral in front of the brackets, Ex 15.06, pg 245
  • Alpha textbook: Expanding with a number and pronumeral in front of the brackets, Ex 15.07, pg 245
  • Alpha textbook: Expanding and collecting like terms, Ex 15.08, pg 247
  • Dr Austin Maths - Expanding Single Brackets Practice GridQuestions PDF · Answers
  • CorbettMaths on expanding single bracketsQuestions PDF · Answers
  • Beta: Single Skills in Chapters 9, pg 167
  • Beta: Double Skills in Chapters 11, pg 200-203
  • Beta: Single brackets: Ex 9.01 to Ex 9.03, pgs 168 to 169 and Parallel Skills 9B, pg 170
  • Beta: Double brackets: Ex 11.04 to 11.07, pgs 201 to 204

Terminology

  • bracket
  • expand
  • distribute
  • term
  • coefficient

Task goals

  • Expand a single bracket by multiplying the term outside the bracket by every term inside it, e.g. $2(y+5)$ or $2x(5x+3)$.
  • Expand a bracket with a negative term outside it, e.g. $-(2m+7)$, taking care with the signs of every term produced.
  • Expand and simplify an expression that combines an expanded bracket with extra terms outside it, e.g. $2(4x+1)+3$.
  • Expand two separate brackets and collect like terms to simplify the result, e.g. $-3(x-4)+2(x-2)$.
  • Form and expand an expression for the area of a rectangle whose side length is written as a bracket, e.g. length $(x+4)$ and width $3$.
  • Check whether an expanded expression is equivalent to the original bracketed expression, including spotting a sign error.

Where this fits

What leads into this objective, and where it goes next.

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Expanding single brackets

Expanding single brackets

Do

Simplifying and manipulating algebraic expressions involving sums, products, differences, and positive integer powers, by: collecting like terms; factorising using common factors; expanding products, including multiplying a single term by a bracketed term.

Statement▸
Year 9 · Algebra · Equations and relationships
NZC26-P4-ALG-ER-P-Y9-01

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