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Cornerstone · Grades 3–5 Keystones #1 26 July 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 July 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄10 + 1⁄10

    Answer: 2⁄5
  2. 2. Algebra

    Simplify: 6x + 2x

    Answer: 8x
  3. 3. Geometry

    Opposite = 8cm, adjacent = 10cm. Calculate the angle

    Answer: 38.7°
  4. 4. Ratio

    Simplify the ratio 14:8

    Answer: 7:4
  5. 5. Statistics

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

    Answer: 2⁄3

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