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Cornerstone · Grades 3–5 Keystones #1 12 August 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 August 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 46 + 23

    Answer: 43
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 60

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

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

    Find the mean of: 9, 3, 17, 2, 17

    Answer: 9.6