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Cornerstone · Grades 3–5 Keystones #1 8 September 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 September 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 438 + 842

    Answer: 438 + 842 = 1280
  2. 2. Algebra

    Solve: x + 5 = 24

    Answer: x = 19
  3. 3. Geometry

    Opposite = 15cm, adjacent = 10cm. Calculate the angle

    Answer: 56.3°
  4. 4. Ratio

    Simplify the ratio 40:15

    Answer: 8:3
  5. 5. Statistics

    What is the probability of rolling a 1 on a fair die?

    Answer: 1⁄6

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