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Cornerstone · Grades 3–5 Keystones #1 3 June 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 3⁄4 + 1⁄5

    Answer: 19⁄20
  2. 2. Algebra

    Solve: x + 4 = 9

    Answer: x = 5
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 7cm and 15cm

    Answer: 52.5cm²
  4. 4. Ratio

    Simplify the ratio 8:14

    Answer: 4:7
  5. 5. Statistics

    Find the mean of: 11, 5, 6

    Answer: 7.3333333333333

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