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Cornerstone · Grades 3–5 Keystones #1 6 July 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 6 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 3⁄5

    Answer: 51⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 71

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 2:3:2

    Answer: 22, 33 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 26, 18, 41, 13, 29, 38, 28, 29

    Answer: 27.75

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