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Cornerstone · Grades 3–5 Keystones #101 11 April 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 2⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 54

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 26, 18, 16, 40, 26, 41, 13, 25

    Answer: 25.6

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