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Cornerstone · Grades 3–5 Keystones #1 22 February 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 February 2022 · mathsvault.uk/keystones

  1. 1. Number

    7000000

    Answer: 7 × 106
  2. 2. Algebra

    Simplify: 9x + 3x

    Answer: 12x
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Simplify the ratio 32:12

    Answer: 8:3
  5. 5. Statistics

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

    Answer: 1⁄2

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