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Cornerstone · Grades 3–5 Keystones #1 20 April 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 20 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 44

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 30, 32, 30, 49, 43, 43, 10. Give your answer to 2 decimal places

    Answer: 33.86

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