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Cornerstone · Grades 3–5 Keystones #1 29 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 5⁄7

    Answer: 29⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 25

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 1:2

    Answer: 32 and 64
  5. 5. Statistics Mean

    Find the mean of: 11, 13, 14, 17

    Answer: 13.75

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