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Cornerstone · Grades 3–5 Keystones #1 15 September 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 85 + 83

    Answer: 85 + 83 = 168
  2. 2. Algebra

    Expand: 2(x + 2)

    Answer: 2x + 4
  3. 3. Geometry

    Find the area of a circle with radius 6cm

    Answer: 113.cm²
  4. 4. Ratio

    Simplify the ratio 24:32

    Answer: 3:4
  5. 5. Statistics

    What is the probability of rolling a 1 on a fair die?

    Answer: 1⁄6

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