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Cornerstone · Grades 3–5 Keystones #248 5 September 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 September 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 25 + 14

    Answer: 1320
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 24

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 5, 8, 10, 13

    Answer: 9