Enrich · Stage 5 · Numbers of any magnitude

Enrich Establish the meaning of prefixes for very small or very large measurement units

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

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• Interactive toolStarterEnrich
  Estimation 180
  Estimation 180 (Andrew Stadel) · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
  Use it for: Daily estimation challenges to build number sense and reasoning about approximations.