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Lintel · Grades 5–7 Keystones #1 7 September 2024
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Keystones — Lintel

Five GCSE retrieval questions · 7 September 2024 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 46 + ? = 147

    Answer: 101
  2. 2. Algebra

    Solve: 2x = 20

    Answer: x = 10
  3. 3. Geometry

    A circle has area 530.9cm². Find its radius (dp)

    Answer: 13cm
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 513