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Lintel · Grades 5–7 Keystones #1 3 May 2021
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Keystones — Lintel

Five GCSE retrieval questions · 3 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 635 + 522

    Answer: 635 + 522 = 1157
  2. 2. Algebra

    Solve: x4 = 2.5

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 5cm

    Answer: 8.6cm
  4. 4. Ratio

    Simplify: 9:9:15

    Answer: 3:3:5
  5. 5. Statistics

    A bag has 3 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 38