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Lintel · Grades 5–7 Keystones #1 4 April 2024
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Keystones — Lintel

Five GCSE retrieval questions · 4 April 2024 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: 5√2 - 2√2

    Answer: 3√2
  2. 2. Algebra

    Solve: x⁄4 = 7.5

    Answer: x = 30
  3. 3. Geometry

    Find c if a = 14cm and b = 10cm in a right triangle

    Answer: 17.2cm
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 4 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 4⁄7

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