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Lintel · Grades 5–7 Keystones #1 23 March 2021
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Keystones — Lintel

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

  1. 1. Number

    Simplify: x5 × x4

    Answer: x9
  2. 2. Algebra

    Find the next term: 1, 3, 7, 13, ...

    Answer: 21
  3. 3. Geometry

    Opposite = 9cm, adjacent = 12cm. Calculate the angle

    Answer: 36.9°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 49, 38, 21, 44, 45, 48, 20

    Answer: 37.9