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Cornerstone · Grades 3–5 Keystones #1 24 August 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 August 2021 · mathsvault.uk/keystones

  1. 1. Number

    6800000

    Answer: 6.8 × 106
  2. 2. Algebra

    Solve: 3x = 27

    Answer: x = 9
  3. 3. Geometry

    Opposite = 16cm, adjacent = 8cm. Calculate the angle

    Answer: 63.4°
  4. 4. Ratio

    Simplify the ratio 28:24

    Answer: 7:6
  5. 5. Statistics

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

    Answer: 1⁄2

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