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Lintel · Grades 5–7 Keystones #43 12 February 2026
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Keystones — Lintel

Five GCSE retrieval questions · 12 February 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 995 + 858

    Answer: 1853
  2. 2. Algebra

    Solve: x4 = 7.75

    Answer: x = 31
  3. 3. Geometry

    A right triangle has hypotenuse 13cm and one side 5cm. Find its area

    Answer: 30cm²
  4. 4. Ratio

    Calculate 35.7% of 557

    Answer: 198.85
  5. 5. Statistics

    A bag has 5 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 512