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Cornerstone · Grades 3–5 Keystones #1 4 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 5⁄10

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

    Solve: 2x - 8 = 2

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 1:2

    Answer: 32 and 64
  5. 5. Statistics Mean

    Find the mean of: 17, 7, 20

    Answer: 14.666666666667

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