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Lintel · Grades 5–7 Keystones #1 2 September 2023
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Keystones — Lintel

Five GCSE retrieval questions · 2 September 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 514 + 511

    Answer: 514 + 511 = 1025
  2. 2. Algebra

    Solve: 3x = 42

    Answer: x = 14
  3. 3. Geometry

    A circle has area 153.9cm². Find its radius (dp)

    Answer: 7cm
  4. 4. Ratio

    Simplify: 15:18:6

    Answer: 5:6:2
  5. 5. Statistics

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

    Answer: 12