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Cornerstone · Grades 3–5 Keystones #1 22 March 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2021 · mathsvault.uk/keystones

  1. 1. Number

    20000

    Answer: 2 × 104
  2. 2. Algebra

    Expand: 6(5x + 4)

    Answer: 30x + 24
  3. 3. Geometry

    Opposite = 16cm, adjacent = 12cm. Calculate the angle

    Answer: 53.1°
  4. 4. Ratio

    Simplify the ratio 6:15

    Answer: 2:5
  5. 5. Statistics

    Calculate the mean of: 30, 44, 49, 25, 32, 36, 37

    Answer: 36.1

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