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Bedrock · Grades 1–3 Keystones #1 19 July 2021
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Keystones — Bedrock

Five GCSE retrieval questions · 19 July 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Expand: 5(x + 5)

    Answer: 5x + 25
  3. 3. Geometry

    Find the area of a right triangle with base 4cm and height 10cm

    Answer: 20cm²
  4. 4. Ratio

    Simplify the ratio 21:24

    Answer: 7:8
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

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