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Cornerstone · Grades 3–5 Keystones #1 17 January 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2022 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: x3 × x4

    Answer: x7
  2. 2. Algebra

    Solve: x + 10 = 23

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio

    Find 65% of 333

    Answer: 216.45
  5. 5. Statistics

    Calculate the mean of: 30, 26, 23, 28, 36, 49, 6

    Answer: 28.3