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Cornerstone · Grades 3–5 Keystones #1 27 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 27 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 4⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 31

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

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 17, 16, 45, 42, 14, 48, 22. Give your answer to 2 decimal places

    Answer: 29.14

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