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Bedrock · Grades 1–3 Keystones #1 20 March 2021
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Keystones — Bedrock

Five GCSE retrieval questions · 20 March 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 1⁄10 + 1⁄10

    Answer: 1⁄5
  2. 2. Algebra

    Factorise: 15x + 9

    Answer: 3(5x + 3)
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 15.6cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify the ratio 8:14

    Answer: 4:7
  5. 5. Statistics

    Find the mean of: 15, 16, 11, 7

    Answer: 12.25

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