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Cornerstone · Grades 3–5 Keystones #1 4 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 4 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 5⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 5 = 47

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

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

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

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 23, 18, 24, 33, 45, 29, 5. Give your answer to 2 decimal places

    Answer: 25.29

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