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Cornerstone · Grades 3–5 Keystones #297 24 October 2026 Skills week 1 of 7
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Five GCSE retrieval questions · 24 October 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 36

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 1:2:1

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

    Calculate the mean of: 38, 42, 44, 38, 39, 26, 45

    Answer: 38.9

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