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Lintel · Grades 5–7 Keystones #57 26 February 2026 Skills week 2 of 7
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Five GCSE retrieval questions · 26 February 2026 · mathsvault.uk/keystones

  1. 1. Number Mixed index laws

    Simplify: y2 × (y3)3 ÷ y2

    Answer: y9
  2. 2. Algebra Unknowns on both sides

    Solve: 7x - 6 = 4x + 21

    Answer: x = 9
  3. 3. Geometry Distance between two points

    Find the distance between (0, 2) and (5, 12)

    Answer: 11.18
  4. 4. Ratio Repeated percentage change

    A car worth £19,910.00 depreciates by 23% each year for 4 years. What is it worth after 4 years?

    Answer: £6,998.97
  5. 5. Statistics Median

    Calculate the median of: 31, 32, 24, 34, 27, 28

    Answer: 29.5

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