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Lintel · Grades 5–7 Keystones #109 19 April 2026 Skills week 2 of 7
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Five GCSE retrieval questions · 19 April 2026 · mathsvault.uk/keystones

  1. 1. Number Mixed index laws

    Simplify: (a4)3 × a3

    Answer: a15
  2. 2. Algebra Unknowns on both sides

    Solve: 7x + 7 = 6x - 8

    Answer: x = 15
  3. 3. Geometry Distance between two points

    Find the distance between (-4, 1) and (4, 6)

    Answer: 9.43
  4. 4. Ratio Repeated percentage change

    A car worth £14,543.00 depreciates by 13% each year for 3 years. What is it worth after 3 years?

    Answer: £9,576.61
  5. 5. Statistics Median

    Calculate the median of: 16, 26, 23, 21, 24, 34

    Answer: 23.5

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