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Cornerstone · Grades 3–5 Keystones #1 13 April 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 April 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 33 + 90

    Answer: 33 + 90 = 123
  2. 2. Algebra

    Simplify: 7x + 6x

    Answer: 13x
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 16cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify: 12:16:20

    Answer: 3:4:5
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

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