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Bedrock · Grades 1–3 Keystones #1 28 October 2021
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Keystones — Bedrock

Five GCSE retrieval questions · 28 October 2021 · mathsvault.uk/keystones

  1. 1. Number

    500000

    Answer: 5 × 105
  2. 2. Algebra

    Simplify: 3x + 9x

    Answer: 12x
  3. 3. Geometry

    Find the area of a right triangle with base 5cm and height 5cm

    Answer: 12.5cm²
  4. 4. Ratio

    Simplify the ratio 40:10

    Answer: 4:1
  5. 5. Statistics

    Find the mean of: 17, 8, 17, 20, 6

    Answer: 13.6

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