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Capstone · Grades 7–9 Keystones #167 16 June 2026 Skills week 4 of 7
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Five GCSE retrieval questions · 16 June 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 2.6 × 106 ÷ 2.2 × 105

    Answer: 1.18 × 101
  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 = 12cm, hypotenuse = 17cm. Find the angle

    Answer: 45.1°
  4. 4. Ratio Mixed ratio problems

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics Median

    Find the median of: 24, 63, 59, 66, 69, 46, 61, 51, 33, 45

    Answer: 59

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