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Capstone · Grades 7–9 Keystones #216 4 August 2026 Skills week 4 of 7
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Five GCSE retrieval questions · 4 August 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 1.9 × 106 ÷ 3.3 × 105

    Answer: 5.76 × 100
  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 = 21cm, hypotenuse = 41cm. Find the angle

    Answer: 59.2°
  4. 4. Ratio Mixed ratio problems

    £315.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £225.00
  5. 5. Statistics Median

    Find the median of: 72, 75, 36, 31, 35, 75, 70, 39, 45, 31

    Answer: 45

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