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Cornerstone · Grades 3–5 Keystones #1 14 September 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 14 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 28

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

    Calculate the hypotenuse when a = 8cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 37, 35, 7, 14, 18, 33

    Answer: 24

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