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Lintel · Grades 5–7 Keystones #1 15 June 2021
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Keystones — Lintel

Five GCSE retrieval questions · 15 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 61 + ? = 165

    Answer: 104
  2. 2. Algebra

    Simplify: 8x - 3x + 10y - 5y

    Answer: 5x + 5y
  3. 3. Geometry

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

    Answer: 45°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 7 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 7⁄12

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