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Cornerstone · Grades 3–5 Keystones #1 2 July 2023
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Keystones — Cornerstone

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

  1. 1. Number

    Calculate: 48 + 28

    Answer: 34
  2. 2. Algebra

    Expand: 7(x + 3)

    Answer: 7x + 21
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio

    Calculate 50% of 181

    Answer: 90.5
  5. 5. Statistics

    What is the probability of rolling a 4 on a fair die?

    Answer: 16