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Cornerstone · Grades 3–5 Keystones #145 25 May 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 56

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 112 in the ratio 3:2:3

    Answer: 42, 28 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 48, 37, 41, 28, 12, 41, 36

    Answer: 34.7

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