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Capstone · Grades 7–9 Keystones #172 21 June 2026 Skills week 4 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 21 June 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 1.3 × 107 ÷ 6.2 × 105

    Answer: 2.1 × 101
  2. 2. Algebra Solving non-monic quadratics

    Solve: 2x² + 14x + 24 = 0

    Answer: x = -4 or x = -3
  3. 3. Geometry SOHCAHTOA — missing angle

    Adjacent = 22cm, hypotenuse = 29cm. Find the angle

    Answer: 40.7°
  4. 4. Ratio Mixed ratio problems

    In ratio 2:3:2, what fraction is the second part?

    Answer: 3⁄7
  5. 5. Statistics Median

    Find the median of: 23, 57, 30, 75, 56, 72, 63, 44, 80

    Answer: 57

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