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Cornerstone · Grades 3–5 Keystones #1 2 May 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: 64 × 62

    Answer: 66
  2. 2. Algebra

    Solve: 8x = 40

    Answer: x = 5
  3. 3. Geometry

    Opposite = 17cm, adjacent = 16cm. Calculate the angle

    Answer: 46.7°
  4. 4. Ratio

    Simplify: 24:8:8

    Answer: 3:1:1
  5. 5. Statistics

    Calculate the mean of: 24, 36, 26, 39, 33, 8

    Answer: 27.7

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