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

Five GCSE retrieval questions · 3 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: -9 + (-9)

    Answer: -18
  2. 2. Algebra

    Solve: x + 3 = 22

    Answer: x = 19
  3. 3. Geometry

    Opposite = 10cm, adjacent = 19cm. Calculate the angle

    Answer: 27.8°
  4. 4. Ratio

    Simplify the ratio 40:25

    Answer: 8:5
  5. 5. Statistics

    Find the mean of: 19, 18, 11, 16

    Answer: 16