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Cornerstone · Grades 3–5 Keystones #76 17 March 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: -2 + 8

    Answer: 6
  2. 2. Algebra

    Solve: x + 8 = 27

    Answer: x = 19
  3. 3. Geometry

    Opposite = 19cm, adjacent = 13cm. Calculate the angle

    Answer: 55.6°
  4. 4. Ratio

    Calculate 50% of 174

    Answer: 87
  5. 5. Statistics

    Find the mean of: 15, 19, 13

    Answer: 15.666666666667