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Lintel · Grades 5–7 Keystones #1 2 December 2021
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Keystones — Lintel

Five GCSE retrieval questions · 2 December 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 997 + 883

    Answer: 1880
  2. 2. Algebra

    Solve: x4 = 2.5

    Answer: x = 10
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 7cm and 11cm

    Answer: 31cm
  4. 4. Ratio

    Find 41% of 477

    Answer: 195.57
  5. 5. Statistics

    A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 311