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Lintel · Grades 5–7 Keystones #39 8 February 2026
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Keystones — Lintel

Five GCSE retrieval questions · 8 February 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 646 + 206

    Answer: 646 + 206 = 852
  2. 2. Algebra

    Find the next term: 1, 4, 10, 19, ...

    Answer: 31
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 33cm. Find the angle

    Answer: 61°
  4. 4. Ratio

    Calculate 36% of 416

    Answer: 149.76
  5. 5. Statistics

    A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 511