Enrich · Stage 4 · Indices

Enrich Establish the multiplication, division and the power of a power index laws, by expressing each number in expanded form with numerical bases and positive- integer indices

Extension and enrichment for students who are ready to go deeper: rich tasks, problem solving and open-ended challenges.

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• Rich taskEnrichmentEarly finishersEnrich
  NRICH: Multiplication Arithmagons
  NRICH (University of Cambridge) · Web page · Free · Link checked 2026-10-15 · Low floor high ceiling, Teacher notes
  Use it for: Low-floor, high-ceiling NRICH task extending this dot point; use for extension or a problem-solving lesson.
• Rich taskEnrichmentEarly finishersEnrich
  NRICH: Power Countdown
  NRICH (University of Cambridge) · Web page · Free · Link checked 2026-10-15 · Low floor high ceiling, Teacher notes
  Use it for: Low-floor, high-ceiling NRICH task extending this dot point; use for extension or a problem-solving lesson.
• Rich taskEnrichmentEarly finishersEnrich
  Open Middle: Equivalent Exponents
  Open Middle · Web page · Free · Link checked 2026-10-15 · Low floor high ceiling
  Use it for: Fill-the-boxes puzzle using digits 0-9 once; many paths to an optimal answer, good extension.