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Lintel · Grades 5–7 Keystones #1 14 March 2021
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Keystones — Lintel

Five GCSE retrieval questions · 14 March 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 825 + 128

    Answer: 825 + 128 = 953
  2. 2. Algebra

    Solve: 3x = 36

    Answer: x = 12
  3. 3. Geometry

    Calculate the area of a circle with diameter 19cm

    Answer: 283.53cm²
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 1⁄2

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