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Capstone · Grades 7–9 Keystones #270 27 September 2026 Skills week 4 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 27 September 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 4.9 × 106 ÷ 2.3 × 106

    Answer: 2.13 × 100
  2. 2. Algebra Solving non-monic quadratics

    Solve: 2x² + 8x + 6 = 0

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

    Adjacent = 24cm, hypotenuse = 39cm. Find the angle

    Answer: 52°
  4. 4. Ratio Mixed ratio problems

    In ratio 1:2:2, what fraction is the second part?

    Answer: 2⁄5
  5. 5. Statistics Median

    Find the median of: 49, 27, 64, 30, 47, 50, 31, 26, 27, 30, 20

    Answer: 30

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