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Cornerstone · Grades 3–5 Keystones #71 12 March 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 March 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 63 + 96

    Answer: 63 + 96 = 159
  2. 2. Algebra

    Factorise: 8x² + 7x

    Answer: x(8x + 7)
  3. 3. Geometry

    Calculate perimeter: two sides are 15cm and 13cm at right angles

    Answer: 47.8cm
  4. 4. Ratio

    Find 73% of 361

    Answer: 263.53
  5. 5. Statistics

    Find the range of: 31, 19, 35, 12, 19

    Answer: 23