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Capstone · Grades 7–9 Keystones #166 15 June 2026 Skills week 4 of 7
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Five GCSE retrieval questions · 15 June 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 3.1 × 107 ÷ 8.1 × 105

    Answer: 3.83 × 101
  2. 2. Algebra Solving non-monic quadratics

    Solve: 6x² + 11x + 3 = 0

    Answer: x = -1⁄2 or x = -1
  3. 3. Geometry SOHCAHTOA — missing angle

    Adjacent = 13cm, hypotenuse = 24cm. Find the angle

    Answer: 57.2°
  4. 4. Ratio Mixed ratio problems

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics Median

    Find the median of: 46, 56, 80, 68, 28, 29, 27, 67, 56

    Answer: 56

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