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Cornerstone · Grades 3–5 Keystones #1 29 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 29 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 5⁄12

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 18

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 30, 10, 43, 46, 33, 8, 42. Give your answer to 2 decimal places

    Answer: 30.29

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