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Cornerstone · Grades 3–5 Keystones #1 15 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 15 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 54

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 1:2

    Answer: 26 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 15, 29, 13, 18, 33, 37. Give your answer to 2 decimal places

    Answer: 24.17

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