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Cornerstone · Grades 3–5 Keystones #258 15 September 2026 Skills week 3 of 7
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Five GCSE retrieval questions · 15 September 2026 · mathsvault.uk/keystones

  1. 1. Number Multiplying fractions

    Multiply: 1⁄7 × 4⁄8

    Answer: 1⁄14
  2. 2. Algebra Expanding single brackets

    Expand: 4(3x + 7)

    Answer: 12x + 28
  3. 3. Geometry Pythagoras — short side

    Find b if a = 6cm and c = 17cm

    Answer: 15.91cm
  4. 4. Ratio Ratio given the difference

    In ratio 4:1, the difference between shares is 87. What are the shares?

    Answer: 116 and 29
  5. 5. Statistics Range

    Find the range of: 10, 31, 32, 5, 21

    Answer: 27

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