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Lintel · Grades 5–7 Keystones #1 22 February 2022
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Keystones — Lintel

Five GCSE retrieval questions · 22 February 2022 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 217 + 816

    Answer: 217 + 816 = 1033
  2. 2. Algebra

    Factorise fully: 20x² + 16x

    Answer: 4x(5x + 4)
  3. 3. Geometry

    Opposite = 16cm, adjacent = 10cm. Calculate the angle

    Answer: 58°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 8 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 2⁄3

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