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Cornerstone · Grades 3–5 Keystones #1 15 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 15 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

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

    Solve: 2x + 7 = 15

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics Mean

    Find the mean of: 5, 8, 9, 20, 3

    Answer: 9

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