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Cornerstone · Grades 3–5 Keystones #1 26 November 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 November 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 68 + 37

    Answer: 3328
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 24

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

    Calculate the hypotenuse when a = 3cm and b = 7cm

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 3:2:4

    Answer: 45, 30 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 33, 41, 44, 30, 49, 33, 40

    Answer: 38.6