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Cornerstone · Grades 3–5 Keystones #17 17 January 2026 Skills week 3 of 7
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Five GCSE retrieval questions · 17 January 2026 · mathsvault.uk/keystones

  1. 1. Number Multiplying fractions

    Multiply: 1⁄3 × 2⁄6

    Answer: 1⁄9
  2. 2. Algebra Expanding single brackets

    Expand: 2(3x + 3)

    Answer: 6x + 6
  3. 3. Geometry Pythagoras — short side

    In a right triangle, if c = 10cm and a = 6cm, find b

    Answer: 8cm
  4. 4. Ratio Ratio given the difference

    In ratio 5:1, the difference between shares is 48. What are the shares?

    Answer: 60 and 12
  5. 5. Statistics Range

    Find the range of: 35, 28, 24, 30, 9

    Answer: 26

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