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Cornerstone · Grades 3–5 Keystones #1 8 December 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 December 2021 · mathsvault.uk/keystones

  1. 1. Number

    700000

    Answer: 7 × 105
  2. 2. Algebra

    Collect like terms: 2x + 3y + 3x + 8y

    Answer: 5x + 11y
  3. 3. Geometry

    Opposite = 6cm, hypotenuse = 6.9cm. Find the angle

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

    Simplify the ratio 24:8

    Answer: 3:1
  5. 5. Statistics

    Find the mean of: 7, 8, 8

    Answer: 7.6666666666667

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