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Capstone · Grades 7–9 Keystones #1 16 October 2021
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Keystones — Capstone

Five GCSE retrieval questions · 16 October 2021 · mathsvault.uk/keystones

  1. 1. Number

    If x3 = 64, what is x?

    Answer: 4
  2. 2. Algebra

    Complete the square: x² + 3.6x

    Answer: (x + 1.8)² - 3.24
  3. 3. Geometry

    Adjacent = 20cm, hypotenuse = 36cm. Find the angle

    Answer: 56.3°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 2⁄5

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