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Cornerstone · Grades 3–5 Keystones #208 27 July 2026 Skills week 3 of 7
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Five GCSE retrieval questions · 27 July 2026 · mathsvault.uk/keystones

  1. 1. Number Multiplying fractions

    Calculate: 3⁄5 × 7

    Answer: 21⁄5
  2. 2. Algebra Expanding single brackets

    Expand: 9(x + 8)

    Answer: 9x + 72
  3. 3. Geometry Pythagoras — short side

    In a right triangle, if c = 13cm and a = 5cm, find b

    Answer: 12cm
  4. 4. Ratio Ratio given the difference

    In ratio 3:1, the difference between shares is 42. What are the shares?

    Answer: 63 and 21
  5. 5. Statistics Range

    Find the range of: 28, 25, 18, 25, 23

    Answer: 10

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