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Cornerstone · Grades 3–5 Keystones #1 26 May 2025 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 May 2025 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 13

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 6cm

    Answer: 9.22cm
  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: 4, 9, 2, 8, 3

    Answer: 5.2

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