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Lintel · Grades 5–7 Keystones #1 17 October 2021
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Keystones — Lintel

Five GCSE retrieval questions · 17 October 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 28 + 25

    Answer: 1320
  2. 2. Algebra

    Solve: 7x = 42

    Answer: x = 6
  3. 3. Geometry

    Find the distance between (-1, 0) and (6, 12)

    Answer: 13.89
  4. 4. Ratio

    Find 82% of 158

    Answer: 129.56
  5. 5. Statistics

    A bag has 6 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 23