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Cornerstone · Grades 3–5 Keystones #1 14 January 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 January 2022 · mathsvault.uk/keystones

  1. 1. Number

    800000

    Answer: 8 × 105
  2. 2. Algebra

    Factorise: 48x + 30

    Answer: 6(8x + 5)
  3. 3. Geometry

    Opposite = 7cm, hypotenuse = 8.cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify: 6:12:18

    Answer: 1:2:3
  5. 5. Statistics

    Calculate the mean of: 29, 46, 47, 16, 29, 43, 16, 44

    Answer: 33.8

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