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Cornerstone · Grades 3–5 Keystones #13 13 January 2026 Skills week 3 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2026 · mathsvault.uk/keystones

  1. 1. Number Multiplying fractions

    Calculate: 48 × 8

    Answer: 4
  2. 2. Algebra Expanding single brackets

    Expand: 4(3x + 6)

    Answer: 12x + 24
  3. 3. Geometry Pythagoras — short side

    Find b if a = 9cm and c = 15cm

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

    A and B share in ratio 7:2. If the difference is 200, what does A get?

    Answer: 280
  5. 5. Statistics Range

    Calculate the range of: 41, 61, 58, 41, 85, 92

    Answer: 51