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Cornerstone · Grades 3–5 Keystones #100 10 April 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 April 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 5⁄7

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x - 10 = 14

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 8cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics Mean

    Find the mean of: 8, 14, 9

    Answer: 10.333333333333

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