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Capstone · Grades 7–9 Keystones #73 14 March 2026 Skills week 4 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 14 March 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 2.6 × 108 ÷ 7.4 × 105

    Answer: 3.51 × 102
  2. 2. Algebra Solving non-monic quadratics

    Solve: 3x² + 12x + 9 = 0

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

    Adjacent = 22cm, hypotenuse = 28cm. Find the angle

    Answer: 38.2°
  4. 4. Ratio Mixed ratio problems

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

    Answer: 2⁄7
  5. 5. Statistics Median

    Find the median of: 55, 30, 77, 43, 74, 29, 58, 35, 74, 52, 36

    Answer: 52

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