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Cornerstone · Grades 3–5 Keystones #96 6 April 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 6⁄7

    Answer: 69⁄56
  2. 2. Algebra Two-step equations

    Solve: 4x - 20 = 40

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 3:1

    Answer: 24 and 8
  5. 5. Statistics Mean

    Find the mean of: 7, 17, 5, 17, 20

    Answer: 13.2

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