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Cornerstone · Grades 3–5 Keystones #1 28 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 28 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 2⁄7

    Answer: 51⁄56
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 56

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

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Find the mean of: 20, 18, 15, 16, 6

    Answer: 15

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