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Cornerstone · Grades 3–5 Keystones #1 14 June 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 14 June 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 1⁄10

    Answer: 1⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 8cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 11, 35, 30, 11, 7, 25, 50

    Answer: 24.1

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