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Bedrock · Grades 1–3 Keystones #1 18 December 2021
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Keystones — Bedrock

Five GCSE retrieval questions · 18 December 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Simplify: 3x + 9x

    Answer: 12x
  3. 3. Geometry

    Find the area of a circle with radius 8cm

    Answer: 201.06cm²
  4. 4. Ratio

    Calculate 25% of 115

    Answer: 28.75
  5. 5. Statistics

    Find the mean of: 17, 3, 7, 20, 10

    Answer: 11.4

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