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Cornerstone · Grades 3–5 Keystones #1 15 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

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

    Solve: 7x - 15 = 41

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 9cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 1:1:2

    Answer: 20, 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 7, 8, 11

    Answer: 8.6666666666667

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