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Lintel · Grades 5–7 Keystones #1 15 February 2023
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Keystones — Lintel

Five GCSE retrieval questions · 15 February 2023 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: y2 × y4 × y4

    Answer: y10
  2. 2. Algebra

    Solve: 5x = 60

    Answer: x = 12
  3. 3. Geometry

    Opposite = 12cm, adjacent = 9cm. Calculate the angle

    Answer: 53.1°
  4. 4. Ratio

    Calculate 43.6% of 356

    Answer: 155.22
  5. 5. Statistics

    A bag has 7 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 7⁄10

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