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Cornerstone · Grades 3–5 Keystones #1 16 September 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄4 + 1⁄5

    Answer: 9⁄20
  2. 2. Algebra

    Simplify: 7x + 3x

    Answer: 10x
  3. 3. Geometry

    Opposite = 12cm, adjacent = 19cm. Calculate the angle

    Answer: 32.3°
  4. 4. Ratio

    Calculate 50% of 191

    Answer: 95.5
  5. 5. Statistics

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

    Answer: 1⁄2

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