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Cornerstone · Grades 3–5 Keystones #102 12 April 2026 Skills week 1 of 7
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Five GCSE retrieval questions · 12 April 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 72

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 47, 47, 25, 16, 38, 20, 32, 29

    Answer: 31.8

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