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Capstone · Grades 7–9 Keystones #170 19 June 2026 Skills week 4 of 7
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Five GCSE retrieval questions · 19 June 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 4.6 × 107 ÷ 8.6 × 106

    Answer: 5.35 × 100
  2. 2. Algebra Solving non-monic quadratics

    Solve: 2x² + 4x + 2 = 0

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

    Adjacent = 19cm, hypotenuse = 28cm. Find the angle

    Answer: 47.3°
  4. 4. Ratio Mixed ratio problems

    In ratio 3:2:4, what fraction is the second part?

    Answer: 2⁄9
  5. 5. Statistics Median

    Find the median of: 26, 24, 65, 20, 72, 59, 37, 60, 68, 56, 29

    Answer: 56

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