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Cornerstone · Grades 3–5 Keystones #1 19 July 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 July 2022 · mathsvault.uk/keystones

  1. 1. Number

    18000

    Answer: 1.8 × 104
  2. 2. Algebra

    Collect like terms: 7x + 6y + 8x + 8y

    Answer: 15x + 14y
  3. 3. Geometry

    Find the distance between (5, 4) and (11, 11)

    Answer: 9.22
  4. 4. Ratio

    Calculate 10% of 41

    Answer: 4.1
  5. 5. Statistics

    A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 7⁄11

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