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Cornerstone · Grades 3–5 Keystones #1 10 January 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 10 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

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

    Solve: 7x - 14 = 49

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 3:1

    Answer: 21 and 7
  5. 5. Statistics Mean

    Find the mean of: 2, 14, 5, 11

    Answer: 8

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