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Cornerstone · Grades 3–5 Keystones #1 26 March 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 26 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 38

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

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 40, 30, 13, 34, 35, 41, 26, 10. Give your answer to 2 decimal places

    Answer: 28.63

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