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Lintel · Grades 5–7 Keystones #1 12 June 2024
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Keystones — Lintel

Five GCSE retrieval questions · 12 June 2024 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 54 + ? = 117

    Answer: 63
  2. 2. Algebra

    Solve: 9x = 108

    Answer: x = 12
  3. 3. Geometry

    Find c if a = 16cm and b = 20cm in a right triangle

    Answer: 25.6cm
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 5 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 512