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Cornerstone · Grades 3–5 Keystones #1 25 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 25 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 85

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 1:2

    Answer: 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 14, 18, 15, 7, 16

    Answer: 14

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