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Cornerstone · Grades 3–5 Keystones #246 3 September 2026 Skills week 1 of 7
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Five GCSE retrieval questions · 3 September 2026 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x - 9 = 9

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

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

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

    Divide 196 in the ratio 2:4:1

    Answer: 56, 112 and 28
  5. 5. Statistics Mean

    Find the mean of: 20, 9, 11, 3, 4

    Answer: 9.4

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