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Cornerstone · Grades 3–5 Keystones #150 30 May 2026 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

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

    Solve: 5x + 5 = 55

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 231 in the ratio 4:3:4

    Answer: 84, 63 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 32, 30, 44, 12, 43, 47, 45, 8

    Answer: 32.6

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