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Cornerstone · Grades 3–5 Keystones #1 19 October 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 October 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 14²

    Answer: 14² = 196
  2. 2. Algebra

    Solve: 5x = 55

    Answer: x = 11
  3. 3. Geometry

    Opposite = 13cm, adjacent = 10cm. Calculate the angle

    Answer: 52.4°
  4. 4. Ratio

    Simplify the ratio 16:12

    Answer: 4:3
  5. 5. Statistics

    What is the probability of rolling a 6 on a fair die?

    Answer: 1⁄6

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