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Cornerstone · Grades 3–5 Keystones #16 16 January 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 January 2026 · mathsvault.uk/keystones

  1. 1. Number

    Find the total of 260, 300, and 110

    Answer: 670
  2. 2. Algebra

    Simplify: 3x + 9x

    Answer: 12x
  3. 3. Geometry

    Calculate the area of a circle with diameter 18cm

    Answer: 254.47cm²
  4. 4. Ratio

    Calculate 50% of 33

    Answer: 16.5
  5. 5. Statistics

    Calculate the range of: 68, 110, 73, 44, 120, 88

    Answer: 76