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Cornerstone · Grades 3–5 Keystones #1 28 January 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 28 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

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

    Solve: 6x - 12 = 78

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 5.83cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics Mean

    Find the mean of: 17, 5, 5

    Answer: 9

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