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

Five GCSE retrieval questions · 3 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    90000000

    Answer: 9 × 107
  2. 2. Algebra

    Solve: x + 13 = 31

    Answer: x = 18
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 28cm. Find the angle

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

    Find 44% of 246

    Answer: 108.24
  5. 5. Statistics

    Find the mean of: 19, 11, 13, 18

    Answer: 15.25

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