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Cornerstone · Grades 3–5 Keystones #1 29 June 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 June 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 82 + 28

    Answer: 82 + 28 = 110
  2. 2. Algebra

    Collect like terms: 6x + 8y + 5x + 6y

    Answer: 11x + 14y
  3. 3. Geometry

    Find the area of a right triangle with base 12cm and height 5cm

    Answer: 30cm²
  4. 4. Ratio

    Calculate 25% of 162

    Answer: 40.5
  5. 5. Statistics

    What is the probability of rolling a 5 on a fair die?

    Answer: 1⁄6

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