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Cornerstone · Grades 3–5 Keystones #98 8 April 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 2⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 77

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

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 45, 20, 10, 37, 50, 5, 11

    Answer: 25.4

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