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Capstone · Grades 7–9 Keystones #265 22 September 2026 Skills week 4 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 22 September 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 3.3 × 108 ÷ 7 × 105

    Answer: 4.71 × 102
  2. 2. Algebra Solving non-monic quadratics

    Solve: 2x² + 4x + 2 = 0

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

    Adjacent = 21cm, hypotenuse = 26cm. Find the angle

    Answer: 36.1°
  4. 4. Ratio Mixed ratio problems

    In ratio 3:1:4, what fraction is the second part?

    Answer: 1⁄8
  5. 5. Statistics Median

    Find the median of: 55, 29, 42, 63, 44, 23, 37, 45, 39, 62

    Answer: 44