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Capstone · Grades 7–9 Keystones #269 26 September 2026 Skills week 4 of 7
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Five GCSE retrieval questions · 26 September 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 1.5 × 106 ÷ 6 × 105

    Answer: 2.5 × 100
  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 = 27cm, hypotenuse = 38cm. Find the angle

    Answer: 44.7°
  4. 4. Ratio Mixed ratio problems

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics Median

    Find the median of: 79, 68, 35, 35, 71, 25, 38, 77, 64, 21

    Answer: 64

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