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Cornerstone · Grades 3–5 Keystones #244 1 September 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 September 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 17

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Divide 117 in the ratio 4:2:3

    Answer: 52, 26 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 22, 6, 27, 37, 49, 45, 20, 21

    Answer: 28.4

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