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Cornerstone · Grades 3–5 Keystones #196 15 July 2026 Skills week 1 of 7
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Five GCSE retrieval questions · 15 July 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄7

    Answer: 15⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 40

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics Mean

    Find the mean of: 14, 10, 5

    Answer: 9.6666666666667

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