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Cornerstone · Grades 3–5 Keystones #1 4 September 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    400000

    Answer: 4 × 105
  2. 2. Algebra

    Expand: 4(x + 7)

    Answer: 4x + 28
  3. 3. Geometry

    Opposite = 18cm, adjacent = 17cm. Calculate the angle

    Answer: 46.6°
  4. 4. Ratio

    Simplify: 4:8:6

    Answer: 2:4:3
  5. 5. Statistics

    Calculate the mean of: 34, 34, 34, 16, 24, 24

    Answer: 27.7

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