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Cornerstone · Grades 3–5 Keystones #1 16 May 2021
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Keystones — Cornerstone

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

  1. 1. Number

    Calculate: 70 + 42

    Answer: 70 + 42 = 112
  2. 2. Algebra

    Solve: x + 13 = 17

    Answer: x = 4
  3. 3. Geometry

    Opposite = 13cm, hypotenuse = 15cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Find 43% of 179

    Answer: 76.97
  5. 5. Statistics

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

    Answer: 1⁄2

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