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Cornerstone · Grades 3–5 Keystones #1 24 October 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 October 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 67 + 87

    Answer: 67 + 87 = 154
  2. 2. Algebra

    Simplify: 8x + 6x

    Answer: 14x
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 11cm and 10cm

    Answer: 55cm²
  4. 4. Ratio

    Simplify: 24:8:8

    Answer: 3:1:1
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

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