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Lintel · Grades 5–7 Keystones #1 20 October 2023
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Keystones — Lintel

Five GCSE retrieval questions · 20 October 2023 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 80 + ? = 142

    Answer: 62
  2. 2. Algebra

    Solve: x2 = 8.5

    Answer: x = 17
  3. 3. Geometry

    Calculate the area of a circle with diameter 22cm

    Answer: 380.13cm²
  4. 4. Ratio

    Calculate 27.3% of 373

    Answer: 101.83
  5. 5. Statistics

    A spinner has 5 red, 4 blue and 6 green sections. Probability of landing on red?

    Answer: 13