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Cornerstone · Grades 3–5 Keystones #1 16 March 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 399 + 969

    Answer: 399 + 969 = 1368
  2. 2. Algebra

    For y = x³, find y when x = 3

    Answer: y = 27
  3. 3. Geometry

    Calculate perimeter: two sides are 12cm and 12cm at right angles

    Answer: 41cm
  4. 4. Ratio

    Simplify: 12:12:8

    Answer: 3:3:2
  5. 5. Statistics

    What is the probability of rolling a 4 on a fair die?

    Answer: 1⁄6

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