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Cornerstone · Grades 3–5 Keystones #1 20 August 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 20 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄4

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x + 15 = 29

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics Mean

    Find the mean of: 16, 2, 8, 11, 8

    Answer: 9

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