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Cornerstone · Grades 3–5 Keystones #1 17 September 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    7000

    Answer: 7 × 103
  2. 2. Algebra

    What is the next term? 3, 12, 48, 192, ...

    Answer: 768
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 7.cm. Find the angle

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

    Calculate 25% of 92

    Answer: 23
  5. 5. Statistics

    Calculate the mean of: 32, 13, 47, 13, 11, 16, 48, 9

    Answer: 23.6

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