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Cornerstone · Grades 3–5 Keystones #259 16 September 2026 Skills week 3 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 September 2026 · mathsvault.uk/keystones

  1. 1. Number Multiplying fractions

    Calculate: 3⁄9 × 3

    Answer: 1
  2. 2. Algebra Expanding single brackets

    Expand: 4(5x + 7)

    Answer: 20x + 28
  3. 3. Geometry Pythagoras — short side

    Find b if a = 9cm and c = 13cm

    Answer: 9.38cm
  4. 4. Ratio Ratio given the difference

    In ratio 6:5, the difference between shares is 25. What are the shares?

    Answer: 150 and 125
  5. 5. Statistics Range

    Find the range of: 7, 8, 17, 11, 9

    Answer: 10

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