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Lintel · Grades 5–7 Keystones #1 23 August 2023
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Keystones — Lintel

Five GCSE retrieval questions · 23 August 2023 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 46 + ? = 163

    Answer: 117
  2. 2. Algebra

    Solve: 8x = 32

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio

    Calculate 47.1% of 245

    Answer: 115.4
  5. 5. Statistics

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

    Answer: 23