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Cornerstone · Grades 3–5 Keystones #162 11 June 2026 Skills week 3 of 7
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Five GCSE retrieval questions · 11 June 2026 · mathsvault.uk/keystones

  1. 1. Number Multiplying fractions

    Multiply: 5⁄3 × 5⁄8

    Answer: 25⁄24
  2. 2. Algebra Expanding single brackets

    Expand: 5(4x + 5)

    Answer: 20x + 25
  3. 3. Geometry Pythagoras — short side

    Find b if a = 13cm and c = 18cm

    Answer: 12.45cm
  4. 4. Ratio Ratio given the difference

    A and B share in ratio 3:2. If the difference is 80, what does A get?

    Answer: 240
  5. 5. Statistics Range

    Calculate the range of: 86, 40, 48, 39, 64, 47

    Answer: 47

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