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Cornerstone · Grades 3–5 Keystones #292 19 October 2026 Skills week 1 of 7
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Five GCSE retrieval questions · 19 October 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x - 12 = 36

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 31, 25, 43, 45, 21, 5, 13, 23

    Answer: 25.8

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