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Capstone · Grades 7–9 Keystones #1 12 August 2023
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Keystones — Capstone

Five GCSE retrieval questions · 12 August 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 12 + 12 + 24

    Answer: 32
  2. 2. Algebra

    Expand: 8(5x - 12)

    Answer: 40x - 96
  3. 3. Geometry

    Adjacent = 23cm, hypotenuse = 38cm. Find the angle

    Answer: 52.8°
  4. 4. Ratio

    Calculate 19.6% of 351

    Answer: 68.8
  5. 5. Statistics

    The mean of 5 numbers is 23. If 4 of them are 24, 36, 26, 39, what is the missing number?

    Answer: -10