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Cornerstone · Grades 3–5 Keystones #1 9 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 9 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 4⁄7

    Answer: 39⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x - 8 = 55

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

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 2:3

    Answer: 26 and 39
  5. 5. Statistics Mean

    Find the mean of: 11, 9, 4

    Answer: 8

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