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Cornerstone · Grades 3–5 Keystones #1 15 August 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 August 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 78 + 37

    Answer: 78 + 37 = 115
  2. 2. Algebra

    Solve: 6x = 48

    Answer: x = 8
  3. 3. Geometry

    Find the area of a circle with radius 9cm

    Answer: 254.47cm²
  4. 4. Ratio

    Find 73% of 432

    Answer: 315.36
  5. 5. Statistics

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

    Answer: 1⁄2

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