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Lintel · Grades 5–7 Keystones #1 9 January 2025
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Keystones — Lintel

Five GCSE retrieval questions · 9 January 2025 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 30 + ? = 112

    Answer: 82
  2. 2. Algebra

    Solve: 8x = 48

    Answer: x = 6
  3. 3. Geometry

    Opposite = 8cm, adjacent = 20cm. Calculate the angle

    Answer: 21.8°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 3 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 13