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

Five GCSE retrieval questions · 5 July 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄7

    Answer: 33⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x - 14 = 14

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 3:4

    Answer: 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 22, 14, 26, 42, 22, 22, 9, 6

    Answer: 20.4

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