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Lintel · Grades 5–7 Keystones #1 25 May 2023
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Keystones — Lintel

Five GCSE retrieval questions · 25 May 2023 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra

    Factorise: 9x² + 4x

    Answer: x(9x + 4)
  3. 3. Geometry

    Calculate the area of a circle with diameter 17cm

    Answer: 226.98cm²
  4. 4. Ratio

    Find 72% of 454

    Answer: 326.88
  5. 5. Statistics

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

    Answer: 5⁄11

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