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Cornerstone · Grades 3–5 Keystones #1 29 August 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 29 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 2⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 71

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 33, 22, 10, 10, 47, 32, 27, 25

    Answer: 25.8

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