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Cornerstone · Grades 3–5 Keystones #1 29 October 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 October 2021 · mathsvault.uk/keystones

  1. 1. Number

    20000

    Answer: 2 × 104
  2. 2. Algebra

    What is the next term? 3, 6, 12, 24, ...

    Answer: 48
  3. 3. Geometry

    Opposite = 9cm, hypotenuse = 12.7cm. Find the angle

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

    Calculate 10% of 39

    Answer: 3.9
  5. 5. Statistics

    Find the mean of: 15, 15, 10

    Answer: 13.333333333333

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