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Lintel · Grades 5–7 Keystones #1 23 September 2023
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Keystones — Lintel

Five GCSE retrieval questions · 23 September 2023 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 58 + ? = 142

    Answer: 84
  2. 2. Algebra

    Solve: x2 = 14.5

    Answer: x = 29
  3. 3. Geometry

    Opposite = 8cm, adjacent = 12cm. Calculate the angle

    Answer: 33.7°
  4. 4. Ratio

    Simplify: 9:15:15

    Answer: 3:5:5
  5. 5. Statistics

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

    Answer: 710