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Cornerstone · Grades 3–5 Keystones #1 23 April 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 April 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    What is the next term? 2, 4, 8, 16, ...

    Answer: 32
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Calculate 10% of 99

    Answer: 9.9
  5. 5. Statistics

    Calculate the mean of: 6, 46, 20, 29, 19, 16, 23

    Answer: 22.7

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