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Cornerstone · Grades 3–5 Keystones #1 11 November 2021
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Five GCSE retrieval questions · 11 November 2021 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: 63 × 65

    Answer: 68
  2. 2. Algebra

    What is the next term? 8, 16, 32, 64, ...

    Answer: 128
  3. 3. Geometry

    Find the distance between (4, 4) and (9, 11)

    Answer: 8.6
  4. 4. Ratio

    Simplify: 18:18:12

    Answer: 3:3:2
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

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