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

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

  1. 1. Number Dividing in standard form

    Divide: 2.9 × 106 ÷ 5.7 × 106

    Answer: 5.09 × 10-1
  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 = 14cm, hypotenuse = 26cm. Find the angle

    Answer: 57.4°
  4. 4. Ratio Mixed ratio problems

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics Median

    Find the median of: 25, 72, 30, 52, 73, 26, 60, 42, 57, 48, 75

    Answer: 52

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